CI coverage

[Bromeon]

Several things are not yet automated via Continuous Integration.
This issue can be updated as this changes.

• Rust checks
  • unit tests
  • rustfmt
  • clippy
  • verify MSRV
  • verify dependency min-versions
  • verify intra-doc links
• Ecosystem checks
  • cargo-deny
  • cargo-machete
• Godot integration tests
  • macOS support
  • compilation of examples
  • test against Godot beta releases (in addition to nightly builds)
    - Wontfix as per Compatibility > Out of scope.
  • run Godot address sanitizers to detect UB
• Docs generation + publishing
• Godot release/export builds

[Bromeon]

Support for unit-tests, macOS and rustfmt added in #48.

[Bromeon]

Support for clippy and leak detection added in #74.
Address sanitizer integration tests added in #109.

[Bromeon]

Address sanitizers now enforced, in #133.

[Bromeon]

Intra-doc link validation and more rustdoc lints under #375.

[Bromeon]

Examples covered in #526.

[Bromeon]

Godot release/export builds covered in #537.

[Bromeon]

cargo-deny and cargo-machete added as part of #548.

This concludes this issue.