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What's Changed

• The deprecated module-level minpq and maxpq have been removed in favor of same-named classmethods introduced in v1.3.0 (#24)
• Introduce a distinct Empty exception for operations that attempt to remove items from an empty pqdict, instead of raising a KeyError. (Note that Empty is derived from KeyError for subclass compatibility with Mapping.popitem and Mapping.clear.) (#24)
• Make internal heap nodes immutable and fast copy as originally proposed by @palkeo in #14

Maintenance

• Factored out indexed heap operations to reduce redundancy
• Better docstrings and type annotations

Full Changelog: https://github.com/nvictus/pqdict/compare/v1.3.0...v1.4.0

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

Provide typing support (#19) applying stub generated by @noamraph

API changes

• Added topvalue method (#17). By @ShivKJ

Maintenance

• Replaced Travis CI with Github Actions.

Maintenance

• Performance of copy improved by avoiding re-heapifying (#12). By @palkeo
• Removed redundant heapify call in constructor.
• Removed unused node_factory kwargs.
• Formatting with black.

API changes

• nlargest and nsmallest now support an optional key parameter (#10). By @espdev

Maintenance

• Dropped 3.3 support.
• Future-proofed for upcoming collections import breakage #6 (@rocky).
• Upgraded test suite from nose to pytest #7 (@rocky).