Merge pull request #215 from DanCardin/dc/string-dep-callable

Deps as string function references.

Merge pull request #213 from DanCardin/dc/release

fix: Make rich/typing-extensions version requirements more precise.

Merge pull request #206 from DanCardin/dc/pyright

fix: Ensure API doesnt yield pyright errors in user code.

Merge pull request #205 from srohr/sr/handle-parser-val-contains-equals

fix: Handle multiple = in explicit arg

Merge pull request #201 from DanCardin/dc/check-for-typos

fix: Check for typos programmatically.

Merge pull request #200 from DanCardin/dc/env-default-none

fix: Coerce `Env(default=None)` to `Empty` to avoid interpreting the value as a string.

Merge pull request #198 from DanCardin/dc/propagate-context

fix: Ensure  args supply the correct parent context to the arg's action handler.

Merge pull request #196 from DanCardin/dc/reexport-empty

fix: Reexport Empty/EmptyType types at the root.

Merge pull request #194 from DanCardin/dc/optional-positional

fix: Optional positional arguments should not get a default value from their action.

Merge pull request #191 from DanCardin/dc/default-none-format

fix: Default formatting when value is None/Empty and formatter is supplied.