What's Changed
* add E5 as SBertBiEncoder by cmacdonald in https://github.com/terrierteam/pyterrier_dr/pull/30
* Documentation revamp by seanmacavaney in https://github.com/terrierteam/pyterrier_dr/pull/31
* flatnav integration into FlexIndex by seanmacavaney in https://github.com/terrierteam/pyterrier_dr/pull/32
**Full Changelog**: https://github.com/terrierteam/pyterrier_dr/compare/v0.3.0...v0.4.0