diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 72f3675b..a52d0730 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -49,3 +49,8 @@ jobs:
       - uses: swatinem/rust-cache@v2
       - name: rustlings dev check
         run: cargo dev check --require-solutions
+  rumdl:
+      runs-on: ubuntu-latest
+      steps:
+        - uses: actions/checkout@v6
+        - uses: rvben/rumdl@v0
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index 7ea41e73..d437cf03 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -9,7 +9,13 @@ on:
       - .github/workflows/website.yml
 
 jobs:
+  rumdl:
+      runs-on: ubuntu-latest
+      steps:
+        - uses: actions/checkout@v6
+        - uses: rvben/rumdl@v0
   build:
+    needs: rumdl
     defaults:
       run:
         working-directory: website
@@ -28,7 +34,6 @@ jobs:
         uses: actions/upload-pages-artifact@v4
         with:
           path: website/public/
-
   deploy:
     needs: build
     # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
diff --git a/.rumdl.toml b/.rumdl.toml
new file mode 100644
index 00000000..528e0e31
--- /dev/null
+++ b/.rumdl.toml
@@ -0,0 +1,7 @@
+[global]
+output-format = "full"
+disable = ["MD013", "MD057"]
+
+[per-file-ignores]
+"website/content/_index.md" = ["MD041"]
+"website/content/**/*.md" = ["MD028", "MD033"]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d2b4153..0f326b60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+# Changelog
+
 ## Unreleased
 
 ### Changed
@@ -109,17 +111,17 @@
 
 ## 6.1.0 (2024-07-10)
 
-#### Added
+### Added
 
 - `dev check`: Check that all exercises (including community ones) include at least one `TODO` comment.
 - `dev check`: Check that all exercises actually fail to run (not already solved).
 
-#### Changed
+### Changed
 
 - Make enum variants more consistent between enum exercises.
 - `iterators3`: Teach about the possible case of integer overflow during division.
 
-#### Fixed
+### Fixed
 
 - Exit with a helpful error message on missing/unsupported terminal/TTY.
 - Mark the last exercise as done.
@@ -196,11 +198,11 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.6.1 (2023-09-18)
 
-#### Changed
+### Changed
 
 - Converted all exercises with assertions to test mode.
 
-#### Fixed
+### Fixed
 
 - `cow1`: Reverted regression introduced by calling `to_mut` where it
   shouldn't have been called, and clarified comment.
@@ -211,7 +213,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.6.0 (2023-09-04)
 
-#### Added
+### Added
 
 - New exercise: `if3`, teaching the user about `if let` statements.
 - `hashmaps2`: Added an extra test function to check if the amount of fruits is higher than zero.
@@ -219,7 +221,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `if1`: Added a test case to check equal values.
 - `if3`: Added a note specifying that there are no test changes needed.
 
-#### Changed
+### Changed
 
 - Swapped the order of threads and smart pointer exercises.
 - Rewrote the CLI to use `clap` - it's matured much since we switched to `argh` :)
@@ -227,7 +229,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `move_semantics`: Switched 1-4 to tests, and rewrote them to be way simpler, while still teaching about the same
   concepts.
 
-#### Fixed
+### Fixed
 
 - `iterators5`:
   - Removed an outdated part of the hint.
@@ -242,7 +244,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `cow1`: Added `.to_mut()` to distinguish from the previous test case.
 - `threads2`: Updated hint text to reference the correct book heading.
 
-#### Housekeeping
+### Housekeeping
 
 - Cleaned up the explanation paragraphs at the start of each exercise.
 - Lots of Nix housekeeping that I don't feel qualified to write about!
@@ -250,13 +252,13 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.5.1 (2023-05-17)
 
-#### Fixed
+### Fixed
 
 - Reverted `rust-project.json` path generation due to an upstream `rust-analyzer` fix.
 
 ## 5.5.0 (2023-05-17)
 
-#### Added
+### Added
 
 - `strings2`: Added a reference to the book chapter for reference conversion
 - `lifetimes`: Added a link to the lifetimekata project
@@ -264,7 +266,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Added a `!` prefix command to watch mode that runs an external command
 - Added a `--success-hints` option to watch mode that shows hints on exercise success
 
-#### Changed
+### Changed
 
 - `vecs2`: Renamed iterator variable bindings for clarify
 - `lifetimes`: Changed order of book references
@@ -273,7 +275,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `options2`: Improved tests for layering options
 - `modules2`: Added more information to the hint
 
-#### Fixed
+### Fixed
 
 - `errors2`: Corrected a comment wording
 - `iterators2`: Fixed a spelling mistake in the hint text
@@ -283,20 +285,20 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - `options3`: Changed exercise to panic when no match is found
 - `rustlings lsp` now generates absolute paths, which should fix VSCode `rust-analyzer` usage on Windows
 
-#### Housekeeping
+### Housekeeping
 
 - Added a markdown linter to run on GitHub actions
 - Split quick installation section into two code blocks
 
 ## 5.4.1 (2023-03-10)
 
-#### Changed
+### Changed
 
 - `vecs`: Added links to `iter_mut` and `map` to README.md
 - `cow1`: Changed main to tests
 - `iterators1`: Formatted according to rustfmt
 
-#### Fixed
+### Fixed
 
 - `errors5`: Unified undisclosed type notation
 - `arc1`: Improved readability by avoiding implicit dereference
@@ -305,7 +307,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.4.0 (2023-02-12)
 
-#### Changed
+### Changed
 
 - Reordered exercises
   - Unwrapped `standard_library_types` into `iterators` and `smart_pointers`
@@ -317,7 +319,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   - Made progress bar update proportional to amount of files verified
   - Decreased `watch` delay from 2 to 1 second
 
-#### Fixed
+### Fixed
 
 - Capitalized "Rust" in exercise hints
 - **enums3**: Removed superfluous tuple brackets
@@ -327,23 +329,23 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   - Fixed a typo in a method name
   - Specified the edition in `rustc` commands
 
-#### Housekeeping
+### Housekeeping
 
 - Bumped min Rust version to 1.58 in installation script
 
 ## 5.3.0 (2022-12-23)
 
-#### Added
+### Added
 
 - **cli**: Added a percentage display in watch mode
 - Added a `flake.nix` for Nix users
 
-#### Changed
+### Changed
 
 - **structs3**: Added an additional test
 - **macros**: Added a link to MacroKata in the README
 
-#### Fixed
+### Fixed
 
 - **strings3**: Added a link to `std` in the hint
 - **threads1**: Corrected a hint link
@@ -357,7 +359,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **enums2**: Removed unnecessary indirection of self
 - **enums3**: Added an extra tuple comment
 
-#### Housekeeping
+### Housekeeping
 
 - Added a VSCode extension recommendation
 - Applied some Clippy and rustfmt formatting
@@ -365,28 +367,28 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.2.1 (2022-09-06)
 
-#### Fixed
+### Fixed
 
 - **quiz1**: Reworded the comment to actually reflect what's going on in the tests.
   Also added another assert just to make sure.
 - **rc1**: Fixed a typo in the hint.
 - **lifetimes**: Add quotes to the `println!` output, for readability.
 
-#### Housekeeping
+### Housekeeping
 
 - Fixed a typo in README.md
 
 ## 5.2.0 (2022-08-27)
 
-#### Added
+### Added
 
 - Added a `reset` command
 
-#### Changed
+### Changed
 
 - **options2**: Convert the exercise to use tests
 
-#### Fixed
+### Fixed
 
 - **threads3**: Fixed a typo
 - **quiz1**: Adjusted the explanations to be consistent with
@@ -394,18 +396,18 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.1.1 (2022-08-17)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Fixed an incorrect assertion in options1
 
 ## 5.1.0 (2022-08-16)
 
-#### Features
+### Features
 
 - Added a new `rc1` exercise.
 - Added a new `cow1` exercise.
 
-#### Bug Fixes
+### Bug Fixes
 
 - **variables5**: Corrected reference to previous exercise
 - **functions4**: Fixed line number reference
@@ -425,7 +427,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   - Added more granular tests
 - Fixed some comment syntax shenanigans in info.toml
 
-#### Housekeeping
+### Housekeeping
 
 - Fixed a typo in .editorconfig
 - Fixed a typo in integration_tests.rs
@@ -434,7 +436,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 5.0.0 (2022-07-16)
 
-#### Features
+### Features
 
 - Hint comments in exercises now also include a reference to the
   `hint` watch mode subcommand.
@@ -466,7 +468,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Added 3 new lifetimes exercises.
 - Added 3 new traits exercises.
 
-#### Bug Fixes
+### Bug Fixes
 
 - **variables2**: Made output messages more verbose.
 - **variables5**: Added a nudging hint about shadowing.
@@ -490,7 +492,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   `Box<dyn Error>`.
 - **try_from_into**: Fixed the function name in comment.
 
-#### Removed
+### Removed
 
 - Removed the legacy LSP feature that was using `mod.rs` files.
 - Removed `quiz4`.
@@ -498,7 +500,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   order, and I've always felt like they didn't quite fit in with the mostly
   simple, book-following style we've had in Rustlings.
 
-#### Housekeeping
+### Housekeeping
 
 - Added missing exercises to the book index.
 - Updated spacing in Cargo.toml.
@@ -506,53 +508,53 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.8.0 (2022-07-01)
 
-#### Features
+### Features
 
 - Added a progress indicator for `rustlings watch`.
 - The installation script now checks for Rustup being installed.
 - Added a `rustlings lsp` command to enable `rust-analyzer`.
 
-#### Bug Fixes
+### Bug Fixes
 
 - **move_semantics5**: Replaced "in vogue" with "in scope" in hint.
 - **if2**: Fixed a typo in the hint.
 - **variables1**: Fixed an incorrect line reference in the hint.
 - Fixed an out of bounds check in the installation Bash script.
 
-#### Housekeeping
+### Housekeeping
 
 - Replaced the git.io URL with the fully qualified URL because of git.io's sunsetting.
 - Removed the deprecated Rust GitPod extension.
 
 ## 4.7.1 (2022-04-20)
 
-#### Features
+### Features
 
 - The amount of dependency crates that need to be compiled went down from ~65 to
   ~45 by bumping dependency versions.
 - The minimum Rust version in the install scripts has been bumped to 1.56.0 (this isn't in
   the release itself, since install scripts don't really get versioned)
 
-#### Bug Fixes
+### Bug Fixes
 
 - **arc1**: A small part has been rewritten using a more functional code style (#968).
 - **using_as**: A small part has been refactored to use `sum` instead of `fold`, resulting
   in better readability.
 
-#### Housekeeping
+### Housekeeping
 
 - The changelog will now be manually written instead of being automatically generated by the
   Git log.
 
 ## 4.7.0 (2022-04-14)
 
-#### Features
+### Features
 
 - Add move_semantics6.rs exercise (#908) ([3f0e1303](https://github.com/rust-lang/rustlings/commit/3f0e1303e0b3bf3fecc0baced3c8b8a37f83c184))
 - **intro:** Add intro section. ([21c9f441](https://github.com/rust-lang/rustlings/commit/21c9f44168394e08338fd470b5f49b1fd235986f))
 - Include exercises folder in the project structure behind a feature, enabling rust-analyzer to work (#917) ([179a75a6](https://github.com/rust-lang/rustlings/commit/179a75a68d03ac9518dec2297fb17f91a4fc506b))
 
-#### Bug Fixes
+### Bug Fixes
 
 - Fix a few spelling mistakes ([1c0fe3cb](https://github.com/rust-lang/rustlings/commit/1c0fe3cbcca85f90b3985985b8e265ee872a2ab2))
 - **cli:**
@@ -579,14 +581,14 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **structs3.rs:** assigned value to cents_per_gram in test ([d1ee2daf](https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532))
 - **traits1:** rename test functions to snake case (#854) ([1663a16e](https://github.com/rust-lang/rustlings/commit/1663a16eade6ca646b6ed061735f7982434d530d))
 
-#### Documentation improvements
+### Documentation improvements
 
 - Add hints on how to get GCC installed (#741) ([bc56861](https://github.com/rust-lang/rustlings/commit/bc5686174463ad6f4f6b824b0e9b97c3039d4886))
 - Fix some code blocks that were not highlighted ([17f9d74](https://github.com/rust-lang/rustlings/commit/17f9d7429ccd133a72e815fb5618e0ce79560929))
 
 ## 4.6.0 (2021-09-25)
 
-#### Features
+### Features
 
 - add advanced_errs2 ([abd6b70c](https://github.com/rust-lang/rustlings/commit/abd6b70c72dc6426752ff41f09160b839e5c449e))
 - add advanced_errs1 ([882d535b](https://github.com/rust-lang/rustlings/commit/882d535ba8628d5e0b37e8664b3e2f26260b2671))
@@ -595,7 +597,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **modules:** update exercises, add modules3 (#822) ([dfd2fab4](https://github.com/rust-lang/rustlings/commit/dfd2fab4f33d1bf59e2e5ee03123c0c9a67a9481))
 - **quiz1:** add default function name in comment (#838) ([0a11bad7](https://github.com/rust-lang/rustlings/commit/0a11bad71402b5403143d642f439f57931278c07))
 
-#### Bug Fixes
+### Bug Fixes
 
 - Correct small typo in exercises/conversions/from_str.rs ([86cc8529](https://github.com/rust-lang/rustlings/commit/86cc85295ae36948963ae52882e285d7e3e29323))
 - **cli:** typo in exercise.rs (#848) ([06d5c097](https://github.com/rust-lang/rustlings/commit/06d5c0973a3dffa3c6c6f70acb775d4c6630323c))
@@ -608,12 +610,12 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.5.0 (2021-07-07)
 
-#### Features
+### Features
 
 - Add move_semantics5 exercise. (#746) ([399ab328](https://github.com/rust-lang/rustlings/commit/399ab328d8d407265c09563aa4ef4534b2503ff2))
 - **cli:** Add "next" to run the next unsolved exercise. (#785) ([d20e413a](https://github.com/rust-lang/rustlings/commit/d20e413a68772cd493561f2651cf244e822b7ca5))
 
-#### Bug Fixes
+### Bug Fixes
 
 - rename result1 to errors4 ([50ab289d](https://github.com/rust-lang/rustlings/commit/50ab289da6b9eb19a7486c341b00048c516b88c0))
 - move_semantics5 hints ([1b858285](https://github.com/rust-lang/rustlings/commit/1b85828548f46f58b622b5e0c00f8c989f928807))
@@ -628,7 +630,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.4.0 (2021-04-24)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Fix spelling error in main.rs ([91ee27f2](https://github.com/rust-lang/rustlings/commit/91ee27f22bd3797a9db57e5fd430801c170c5db8))
 - typo in default out text ([644c49f1](https://github.com/rust-lang/rustlings/commit/644c49f1e04cbb24e95872b3a52b07d692ae3bc8))
@@ -656,7 +658,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **threads1:** line number correction ([7857b0a6](https://github.com/rust-lang/rustlings/commit/7857b0a689b0847f48d8c14cbd1865e3b812d5ca))
 - **try_from_into:** use trait objects ([2e93a588](https://github.com/rust-lang/rustlings/commit/2e93a588e0abe8badb7eafafb9e7d073c2be5df8))
 
-#### Features
+### Features
 
 - Replace clap with argh ([7928122f](https://github.com/rust-lang/rustlings/commit/7928122fcef9ca7834d988b1ec8ca0687478beeb))
 - Replace emojis when NO_EMOJI env variable present ([8d62a996](https://github.com/rust-lang/rustlings/commit/8d62a9963708dbecd9312e8bcc4b47049c72d155))
@@ -669,7 +671,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.3.0 (2020-12-29)
 
-#### Features
+### Features
 
 - Rewrite default out text ([44d39112](https://github.com/rust-lang/rustlings/commit/44d39112ff122b29c9793fe52e605df1612c6490))
 - match exercise order to book chapters (#541) ([033bf119](https://github.com/rust-lang/rustlings/commit/033bf1198fc8bfce1b570e49da7cde010aa552e3))
@@ -677,7 +679,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - add "rustlings list" command ([838f9f30](https://github.com/rust-lang/rustlings/commit/838f9f30083d0b23fd67503dcf0fbeca498e6647))
 - **try_from_into:** remove duplicate annotation ([04f1d079](https://github.com/rust-lang/rustlings/commit/04f1d079aa42a2f49af694bc92c67d731d31a53f))
 
-#### Bug Fixes
+### Bug Fixes
 
 - update structs README ([bcf14cf6](https://github.com/rust-lang/rustlings/commit/bcf14cf677adb3a38a3ac3ca53f3c69f61153025))
 - added missing exercises to info.toml ([90cfb6ff](https://github.com/rust-lang/rustlings/commit/90cfb6ff28377531bfc34acb70547bdb13374f6b))
@@ -691,14 +693,14 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.2.0 (2020-11-07)
 
-#### Features
+### Features
 
 - Add HashMap exercises ([633c00cf](https://github.com/rust-lang/rustlings/commit/633c00cf8071e1e82959a3010452a32f34f29fc9))
 - Add Vec exercises ([0c12fa31](https://github.com/rust-lang/rustlings/commit/0c12fa31c57c03c6287458a0a8aca7afd057baf6))
 - **primitive_types6:** Add a test (#548) ([2b1fb2b7](https://github.com/rust-lang/rustlings/commit/2b1fb2b739bf9ad8d6b7b12af25fee173011bfc4))
 - **try_from_into:** Add tests (#571) ([95ccd926](https://github.com/rust-lang/rustlings/commit/95ccd92616ae79ba287cce221101e0bbe4f68cdc))
 
-#### Bug Fixes
+### Bug Fixes
 
 - log error output when inotify limit is exceeded ([d61b4e5a](https://github.com/rust-lang/rustlings/commit/d61b4e5a13b44d72d004082f523fa1b6b24c1aca))
 - more unique temp_file ([5643ef05](https://github.com/rust-lang/rustlings/commit/5643ef05bc81e4a840e9456f4406a769abbe1392))
@@ -711,7 +713,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.1.0 (2020-10-05)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Update rustlings version in Cargo.lock ([1cc40bc9](https://github.com/rust-lang/rustlings/commit/1cc40bc9ce95c23d56f6d91fa1c4deb646231fef))
 - **arc1:** index mod should equal thread count ([b4062ef6](https://github.com/rust-lang/rustlings/commit/b4062ef6993e80dac107c4093ea85166ad3ee0fa))
@@ -721,7 +723,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **structs3:** Small adjustment of variable name ([114b54cb](https://github.com/rust-lang/rustlings/commit/114b54cbdb977234b39e5f180d937c14c78bb8b2))
 - **using_as:** Add test so that proper type is returned. (#512) ([3286c5ec](https://github.com/rust-lang/rustlings/commit/3286c5ec19ea5fb7ded81d047da5f8594108a490))
 
-#### Features
+### Features
 
 - Added iterators1.rs exercise ([9642f5a3](https://github.com/rust-lang/rustlings/commit/9642f5a3f686270a4f8f6ba969919ddbbc4f7fdd))
 - Add ability to run rustlings on repl.it (#471) ([8f7b5bd0](https://github.com/rust-lang/rustlings/commit/8f7b5bd00eb83542b959830ef55192d2d76db90a))
@@ -733,12 +735,12 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 4.0.0 (2020-07-08)
 
-#### Breaking Changes
+### Breaking Changes
 
 - Add a --nocapture option to display test harnesses' outputs ([8ad5f9bf](https://github.com/rust-lang/rustlings/commit/8ad5f9bf531a4848b1104b7b389a20171624c82f))
 - Rename test to quiz, fixes #244 ([010a0456](https://github.com/rust-lang/rustlings/commit/010a04569282149cea7f7a76fc4d7f4c9f0f08dd))
 
-#### Features
+### Features
 
 - Add traits README ([173bb141](https://github.com/rust-lang/rustlings/commit/173bb14140c5530cbdb59e53ace3991a99d804af))
 - Add box1.rs exercise ([7479a473](https://github.com/rust-lang/rustlings/commit/7479a4737bdcac347322ad0883ca528c8675e720))
@@ -747,7 +749,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Added exercise structs3.rs ([b66e2e09](https://github.com/rust-lang/rustlings/commit/b66e2e09622243e086a0f1258dd27e1a2d61c891))
 - Add exercise variables6 covering const (#352) ([5999acd2](https://github.com/rust-lang/rustlings/commit/5999acd24a4f203292be36e0fd18d385887ec481))
 
-#### Bug Fixes
+### Bug Fixes
 
 - Change then to than ([ddd98ad7](https://github.com/rust-lang/rustlings/commit/ddd98ad75d3668fbb10eff74374148aa5ed2344d))
 - rename quiz1 to tests1 in info (#420) ([0dd1c6ca](https://github.com/rust-lang/rustlings/commit/0dd1c6ca6b389789e0972aa955fe17aa15c95f29))
@@ -774,11 +776,11 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 3.0.0 (2020-04-11)
 
-#### Breaking Changes
+### Breaking Changes
 
 - make "compile" exercises print output (#278) ([3b6d5c](https://github.com/fmoko/rustlings/commit/3b6d5c3aaa27a242a832799eb66e96897d26fde3))
 
-#### Bug Fixes
+### Bug Fixes
 
 - **primitive_types:** revert primitive_types4 (#296) ([b3a3351e](https://github.com/rust-lang/rustlings/commit/b3a3351e8e6a0bdee07077d7b0382953821649ae))
 - **run:** compile clippy exercise files (#295) ([3ab084a4](https://github.com/rust-lang/rustlings/commit/3ab084a421c0f140ae83bf1fc3f47b39342e7373))
@@ -787,26 +789,26 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   - remove duplicate not done comment (#292) ([dab90f](https://github.com/fmoko/rustlings/commit/dab90f7b91a6000fe874e3d664f244048e5fa342))
 - don't hardcode documentation version for traits (#288) ([30e6af](https://github.com/fmoko/rustlings/commit/30e6af60690c326fb5d3a9b7335f35c69c09137d))
 
-#### Features
+### Features
 
 - add Option2 exercise (#290) ([86b5c08b](https://github.com/rust-lang/rustlings/commit/86b5c08b9bea1576127a7c5f599f5752072c087d))
 - add exercise for option (#282) ([135e5d47](https://github.com/rust-lang/rustlings/commit/135e5d47a7c395aece6f6022117fb20c82f2d3d4))
 - add new exercises for generics (#280) ([76be5e4e](https://github.com/rust-lang/rustlings/commit/76be5e4e991160f5fd9093f03ee2ba260e8f7229))
 - **ci:** add buildkite config ([b049fa2c](https://github.com/rust-lang/rustlings/commit/b049fa2c84dba0f0c8906ac44e28fd45fba51a71))
 
-### 2.2.1 (2020-02-27)
+## 2.2.1 (2020-02-27)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Re-add cloning the repo to install scripts ([3d9b03c5](https://github.com/rust-lang/rustlings/commit/3d9b03c52b8dc51b140757f6fd25ad87b5782ef5))
 
-#### Features
+### Features
 
 - Add clippy lints (#269) ([1e2fd9c9](https://github.com/rust-lang/rustlings/commit/1e2fd9c92f8cd6e389525ca1a999fca4c90b5921))
 
 ## 2.2.0 (2020-02-25)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Update deps to version compatible with aarch64-pc-windows (#263) ([19a93428](https://github.com/rust-lang/rustlings/commit/19a93428b3c73d994292671f829bdc8e5b7b3401))
 - **docs:**
@@ -821,7 +823,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   - Change test command ([fe10e06c](https://github.com/rust-lang/rustlings/commit/fe10e06c3733ddb4a21e90d09bf79bfe618e97ce)
   - Correct test command in tests1.rs comment (#263) ([39fa7ae](https://github.com/rust-lang/rustlings/commit/39fa7ae8b70ad468da49b06f11b2383135a63bcf))
 
-#### Features
+### Features
 
 - Add variables5.rs exercise (#264) ([0c73609e](https://github.com/rust-lang/rustlings/commit/0c73609e6f2311295e95d6f96f8c747cfc4cba03))
 - Show a completion message when watching (#253) ([d25ee55a](https://github.com/rust-lang/rustlings/commit/d25ee55a3205882d35782e370af855051b39c58c))
@@ -833,7 +835,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 2.1.0 (2019-11-27)
 
-#### Bug Fixes
+### Bug Fixes
 
 - add line numbers in several exercises and hints ([b565c4d3](https://github.com/rust-lang/rustlings/commit/b565c4d3e74e8e110bef201a082fa1302722a7c3))
 - **arc1:** Fix some words in the comment ([c42c3b21](https://github.com/rust-lang/rustlings/commit/c42c3b2101df9164c8cd7bb344def921e5ba3e61))
@@ -844,33 +846,33 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **strings2:** update line number in hint ([a09f684f](https://github.com/rust-lang/rustlings/commit/a09f684f05c58d239a6fc59ec5f81c2533e8b820))
 - **variables1:** Correct wrong word in comment ([fda5a470](https://github.com/rust-lang/rustlings/commit/fda5a47069e0954f16a04e8e50945e03becb71a5))
 
-#### Features
+### Features
 
 - **watch:** show hint while watching ([8143d57b](https://github.com/rust-lang/rustlings/commit/8143d57b4e88c51341dd4a18a14c536042cc009c))
 
 ## 2.0.0 (2019-11-12)
 
-#### Bug Fixes
+### Bug Fixes
 
 - **default:** Clarify the installation procedure ([c371b853](https://github.com/rust-lang/rustlings/commit/c371b853afa08947ddeebec0edd074b171eeaae0))
 - **info:** Fix trailing newlines for hints ([795b6e34](https://github.com/rust-lang/rustlings/commit/795b6e348094a898e9227a14f6232f7bb94c8d31))
 - **run:** make `run` never prompt ([4b265465](https://github.com/rust-lang/rustlings/commit/4b26546589f7d2b50455429482cf1f386ceae8b3))
 
-#### Breaking Changes
+### Breaking Changes
 
 - Refactor hint system ([9bdb0a12](https://github.com/rust-lang/rustlings/commit/9bdb0a12e45a8e9f9f6a4bd4a9c172c5376c7f60))
 - improve `watch` execution mode ([2cdd6129](https://github.com/rust-lang/rustlings/commit/2cdd61294f0d9a53775ee24ad76435bec8a21e60))
 - Index exercises by name ([627cdc07](https://github.com/rust-lang/rustlings/commit/627cdc07d07dfe6a740e885e0ddf6900e7ec336b))
 - **run:** makes `run` never prompt ([4b265465](https://github.com/rust-lang/rustlings/commit/4b26546589f7d2b50455429482cf1f386ceae8b3))
 
-#### Features
+### Features
 
 - **cli:** check for rustc before doing anything ([36a033b8](https://github.com/rust-lang/rustlings/commit/36a033b87a6549c1e5639c908bf7381c84f4f425))
 - **hint:** Add test for hint ([ce9fa6eb](https://github.com/rust-lang/rustlings/commit/ce9fa6ebbfdc3e7585d488d9409797285708316f))
 
-### 1.5.1 (2019-11-11)
+## 1.5.1 (2019-11-11)
 
-#### Bug Fixes
+### Bug Fixes
 
 - **errors3:** Update hint ([dcfb427b](https://github.com/rust-lang/rustlings/commit/dcfb427b09585f0193f0a294443fdf99f11c64cb), closes [#185](https://github.com/rust-lang/rustlings/issues/185))
 - **if1:** Remove `return` reference ([ad03d180](https://github.com/rust-lang/rustlings/commit/ad03d180c9311c0093e56a3531eec1a9a70cdb45))
@@ -881,7 +883,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 1.5.0 (2019-11-09)
 
-#### Bug Fixes
+### Bug Fixes
 
 - **test1:** Rewrite logic ([79a56942](https://github.com/rust-lang/rustlings/commit/79a569422c8309cfc9e4aed25bf4ab3b3859996b))
 - **installation:** Fix rustlings installation check ([7a252c47](https://github.com/rust-lang/rustlings/commit/7a252c475551486efb52f949b8af55803b700bc6))
@@ -897,15 +899,15 @@ Then follow the link to the guide about [community exercises](https://rustlings.
   - Swap assertion parameter order ([4086d463](https://github.com/rust-lang/rustlings/commit/4086d463a981e81d97781851d17db2ced290f446))
   - renamed function name to snake case closes #180 ([89d5186c](https://github.com/rust-lang/rustlings/commit/89d5186c0dae8135ecabf90ee8bb35949bc2d29b))
 
-#### Features
+### Features
 
 - Add enums exercises ([dc150321](https://github.com/rust-lang/rustlings/commit/dc15032112fc485226a573a18139e5ce928b1755))
 - Added exercise for struct update syntax ([1c4c8764](https://github.com/rust-lang/rustlings/commit/1c4c8764ed118740cd4cee73272ddc6cceb9d959))
 - **iterators2:** adds iterators2 exercise including config ([9288fccf](https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031))
 
-### 1.4.1 (2019-08-13)
+## 1.4.1 (2019-08-13)
 
-#### Bug Fixes
+### Bug Fixes
 
 - **iterators2:** Remove syntax resulting in misleading error message ([4cde8664](https://github.com/rust-lang/rustlings/commit/4cde86643e12db162a66e62f23b78962986046ac))
 - **option1:** Add test for prematurely passing exercise ([a750e4a1](https://github.com/rust-lang/rustlings/commit/a750e4a1a3006227292bb17d57d78ce84da6bfc6))
@@ -913,7 +915,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 
 ## 1.4.0 (2019-07-13)
 
-#### Bug Fixes
+### Bug Fixes
 
 - **installation:** Fix rustlings installation check ([7a252c47](https://github.com/rust-lang/rustlings/commit/7a252c475551486efb52f949b8af55803b700bc6))
 - **iterators:** Rename iterator3.rs ([433d2115](https://github.com/rust-lang/rustlings/commit/433d2115bc1c04b6d34a335a18c9a8f3e2672bc6))
@@ -922,18 +924,18 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - **cli:** Check if changed exercise file exists before calling verify ([ba85ca3](https://github.com/rust-lang/rustlings/commit/ba85ca32c4cfc61de46851ab89f9c58a28f33c88))
 - **structs1:** Fix the irrefutable let pattern warning ([cc6a141](https://github.com/rust-lang/rustlings/commit/cc6a14104d7c034eadc98297eaaa972d09c50b1f))
 
-#### Features
+### Features
 
 - **changelog:** Use clog for changelogs ([34e31232](https://github.com/rust-lang/rustlings/commit/34e31232dfddde284a341c9609b33cd27d9d5724))
 - **iterators2:** adds iterators2 exercise including config ([9288fccf](https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031))
 
-### 1.3.0 (2019-06-05)
+## 1.3.0 (2019-06-05)
 
-#### Features
+### Features
 
 - Adds a simple exercise for structures (#163, @briankung)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Add Result type signature as it is difficult for new comers to understand Generics and Error all at once. (#157, @veggiemonk)
 - Rustfmt and whitespace fixes (#161, @eddyp)
@@ -942,29 +944,29 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Fix broken link (#164, @HanKruiger)
 - Remove highlighting and syntect (#167, @komaeda)
 
-### 1.2.2 (2019-05-07)
+## 1.2.2 (2019-05-07)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Reverted `--nocapture` flag since it was causing tests to pass unconditionally
 
-### 1.2.1 (2019-04-22)
+## 1.2.1 (2019-04-22)
 
-#### Bug Fixes
+### Bug Fixes
 
 - Fix the `--nocapture` feature (@komaeda)
 - Provide a nicer error message for when you're in the wrong directory
 
-### 1.2.0 (2019-04-22)
+## 1.2.0 (2019-04-22)
 
-#### Features
+### Features
 
 - Add errors to exercises that compile without user changes (@yvan-sraka)
 - Use --nocapture when testing, enabling `println!` when running (@komaeda)
 
-### 1.1.1 (2019-04-14)
+## 1.1.1 (2019-04-14)
 
-#### Bug fixes
+### Bug fixes
 
 - Fix permissions on exercise files (@zacanger, #133)
 - Make installation checks more thorough (@komaeda, 1b3469f236bc6979c27f6e1a04e4138a88e55de3)
@@ -974,7 +976,7 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Fix links by deleting book version (@diodfr, #142)
 - Canonicalize paths to fix path matching (@cjpearce, #143)
 
-### 1.1.0 (2019-03-20)
+## 1.1.0 (2019-03-20)
 
 - errors2.rs: update link to Rust book (#124)
 - Start verification at most recently modified file (#120)
@@ -983,12 +985,12 @@ Then follow the link to the guide about [community exercises](https://rustlings.
 - Give a warning when Rustlings isn't run from the right directory (#123)
 - Verify that rust version is recent enough to install Rustlings (#131)
 
-### 1.0.1 (2019-03-06)
+## 1.0.1 (2019-03-06)
 
 - Adds a way to install Rustlings in one command (`curl -L https://git.io/rustlings | bash`)
 - Makes `rustlings watch` react to create file events (@shaunbennett, #117)
 - Reworks the exercise management to use an external TOML file instead of just listing them in the code
 
-### 1.0.0 (2019-03-06)
+## 1.0.0 (2019-03-06)
 
 Initial release.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 95605f70..7b684d39 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,7 +14,7 @@ I want to …
 
 ## Issues
 
-You can open an issue [here](https://github.com/rust-lang/rustlings/issues/new).
+You can [open an issue](https://github.com/rust-lang/rustlings/issues/new).
 If you're reporting a bug, please include the output of the following commands:
 
 - `cargo --version`