Release v0.0.15

Default subcommands, literal metavar tweaks.

Release v0.0.14

Fix metavars for generics

Release v0.0.13

Significantly improved generic handling

Release v0.0.12

Support booleans in fixed-length tuples

Release v0.0.11

Fix % in docstrings for boolean fields.

Release v0.0.10

Fix `%` in docstrings, version bump

Release v0.0.9

Serialization API, inherited docstring fix

Release v0.0.8

Bump typing_extensions; remove GenericAlias dep

Release v0.0.7

Hide default values for boolean flags

Release v0.0.6

Version bump