0.1.0
First release. mix spec_lint compares every exported function's @spec
with the signature the Elixir compiler inferred for it and reports
contradictions (errors) and undeclared return shapes (warnings), with an
ignore list in .spec_lint.exs. Tested on Elixir 1.18 to 1.20 on OTP 27 to 29;
support for the Elixir 1.21 development branch is experimental.