v0.29.0

Adds Choices (Enum) support.

cli:
  choice:
    choices: [a, b, c]
    default: a

❯ example run --choice d
Error 
│ Invalid value for '--choice': 'd' is not one of 'a', 'b', 'c'.  │

Full Changelog: v0.27.2...v0.29.0