v1.3.0

This minor release drops support for Python versions <3.7

In turn, we now provide full static type annotations and have migrated to modern package build tools.

New features:

• Added popvalue method to mirror recent topvalue addition.
• Added default argument to top and support for default using pop with PQ semantics. If given, this value is returned when the collection is empty.

Maintenance:

• Dropped support for Python 2.7, 3.4, 3.5, and 3.6 (#22).
• Inlined type annotations and removed stub file. Thanks for advice from @aqeelat.
• Migrate to pyproject.toml
• Linting and static type checking in CI

Deprecations:

• minpq and maxpq module-level functions are deprecated in favor of pqdict classmethods and will be removed in v1.4