Rcsbsearchapi

- Fix mug with missing schema files when installed via pip
- Add jupyter notebooks
- Try rcsbsearch live with binder

- Remove `in` operator syntax (incompatible with python spec)
- Fix import error due to schema change
- Ship schema with the package for stability and performance

- Test release process

- Add fluent syntax (originally called builder syntax)
- Add PartialQuery helper
- Improve docs & automated testing

- Ship it!
- Support for text searches