Recent Syntax Changes

[smores56]

We have recently created many issues surrounding new syntaxes being added to Roc. To collect these into a single, pinnable issue, this issue is now the representative for discoverability of all recent syntax issues.

• [x] https://github.com/roc-lang/roc/issues/7104
  • [ ] https://github.com/roc-lang/roc/issues/7105
• [x] https://github.com/roc-lang/roc/issues/7086
• [ ] https://github.com/roc-lang/roc/issues/7091
• [ ] https://github.com/roc-lang/roc/issues/7451
• [ ] https://github.com/roc-lang/roc/issues/7440

[gamebox]

Do we want to put things like snake_case, PNC, and new lambda syntax here? (even though they are done?)

[smores56]

If they have GitHub issues, they should go in here. If they don't have issues and they're finished already, don't bother creating issues.