change version number for release (PythonOT#594)

[MRG] Release 0.9.2 (PythonOT#585)

* first shot 0.9.2 release

* update release file

* update contributors

Update README.md

Now it works

[MRG] Release 0.9.0 (PythonOT#452)

* relkase text

* correct typos

[MRG] Release 8.2 (PythonOT#365)

* release text and number

* add examples in release fil build wheels

* switch gallery to release

* add much needed contributors file

* debug circleci

* une line of logos

* working logo

* back to stable sphinx galery

[MRG] Release 0.8.1.0 and correct doc build (PythonOT#332)

* update ersion and change doc build

* update release file

* debug release of doc

* set version number to 0.8.1.0

[MRG] Remove python 3.6 properly for all wheel building (PythonOT#328)

* remove python3.6 properly

tag for debugging doc

update classifiers

Merge pull request PythonOT#167 from PythonOT/doc_v0.7

[WIP] Reproducible example WDA and remove dense from doc