Release mcan/0.6.0

[Ironedde]

Added

• Add method to check if bus is dominant (Add method to check if bus is dominant #51)

Thank you!

Thank you for your contribution.
Please make sure that your submission includes the following:

Must

• The code compiles without errors or warnings.
• All tests pass and in the best case you also added new tests.
• cargo +stable fmt was run.
• cargo +stable clippy yields no warnings.
• Your changes were added to the CHANGELOG.md in the proper section.
• You add a description of your work to this PR.
• You added proper docs (in code, rustdoc and README.md) for your
  newly added features and code.

[Ironedde]

• Add tag mcan/0.6.0 to the master branch
• Publish to crates.io

[epontan]

Looks good 👍

Thank you @Ironedde!