Pyterrier-caching

What's Changed
* non-strict numpy by seanmacavaney in https://github.com/terrierteam/pyterrier-caching/pull/23


**Full Changelog**: https://github.com/terrierteam/pyterrier-caching/compare/v0.5.1...v0.5.2

**Full Changelog**: https://github.com/terrierteam/pyterrier-caching/compare/v0.5.0...v0.5.1

What's Changed
* one call to underlying retriever (when possible) by seanmacavaney in https://github.com/terrierteam/pyterrier-caching/pull/15
* add description for tqdm by cmacdonald in https://github.com/terrierteam/pyterrier-caching/pull/19
* More temporary caches by seanmacavaney in https://github.com/terrierteam/pyterrier-caching/pull/16
* retriever cache validation warning by seanmacavaney in https://github.com/terrierteam/pyterrier-caching/pull/21


**Full Changelog**: https://github.com/terrierteam/pyterrier-caching/compare/v0.4.1...v0.5.0

**Full Changelog**: https://github.com/seanmacavaney/pyterrier-caching/compare/v0.4.0...v0.4.1

**Full Changelog**: https://github.com/seanmacavaney/pyterrier-caching/compare/v0.3.0...v0.4.0

What's Changed
* WIP - caching for features by cmacdonald in https://github.com/seanmacavaney/pyterrier-caching/pull/18

New Contributors
* cmacdonald made their first contribution in https://github.com/seanmacavaney/pyterrier-caching/pull/18

**Full Changelog**: https://github.com/seanmacavaney/pyterrier-caching/compare/v0.2.2...v0.3.0