Add performance tests, `replace_subgroups`, and improve CI

What's Changed

• Simplify and Fix test_decorator.py by @lebrice in #273
• Remove PyTorch as a test dependency by @lebrice in #274
• Add replace_subgroups function by @zhiruiluo in #215
• add confilct_resolver_max_attempts property by @JonasFrey96 in #272
• Increase import performance (lru_cache) and add pytest-benchmark by @lebrice in #279
• Add Performance Regression tests to CI by @lebrice in #282

New Contributors

• @JonasFrey96 made their first contribution in #272

Full Changelog: v0.1.3...v0.1.4