Scanpy-scripts

* Allow annData output from plotting functions https://github.com/ebi-gene-expression-group/scanpy-scripts/pull/95

* Hide singlet groups before marker detection https://github.com/ebi-gene-expression-group/scanpy-scripts/pull/88

Apologies to interested observers- recent releases were more than patches and I should have been bumping the minor version at least.

This version:

- bugfix to shift to Scanpy 1.6.0 in last release: https://github.com/ebi-gene-expression-group/scanpy-scripts/pull/87

- Add batch correction methods, Scanpy 1.6-specific things https://github.com/ebi-gene-expression-group/scanpy-scripts/pull/86

- Updates for Scanpy 1.5.1 https://github.com/ebi-gene-expression-group/scanpy-scripts/pull/84

- Change dependencies to account for upstream changes https://github.com/ebi-gene-expression-group/scanpy-scripts/pull/83