Tags: rubyworks/pqueue

Maintenance release v2.2.0 — modernize project tooling

Replace custom Indexer system with standard gemspec, Travis CI with
GitHub Actions, and add Rakefile. Switch tests to minitest. Update
URLs to HTTPS, clean up obsolete files and .gitignore.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Quick fix to remove old legacy library that was supposed to be

removed in previous release. No big deal, it just confused the
YARD documentation.

This is a complete rewrite to simplify the design and use more

of Ruby's internal methods.  Overall performance should be markedly
improved. A few method names have changed to be more consistent with
Ruby's other data structure. Note that the internal heap is now in reverse
order from the previous version. If using #to_a be aware that the priority
order will be reversed. This release also switches the library to
distribution under the BSD-2-Clause license.