refactor: improve linter execution with concurrent processing, better…

… output

refactor: clean up linter scripts

Add GitHub Copilot instructions for ankerl::unordered_dense

Fully generated with Claude Sonnet 4.5

Bump version to 4.6.0 in CMakeLists.txt, header file, and Meson build…

… configuration

Adds ANKERL_UNORDERED_DENSE_DISABLE_PMR, fixes #109

bump version to 4.4.0

bump version to 4.3.1

bump version to 4.3.0

bump version to 4.2.0

updated version to 4.1.2