Increase version number
Missing CHANGELOG
(transplanted from 7a9f85ca425952928d0bd3bc290e7c4f1bacdf28)

--HG--
extra : transplant_source : z%9F%85%CABYR%92%8D%0B%D3%BC%29%0E%7CO%1B%AC%DF%28
Prepare release 3.0.1
Added tag 3.0.1 for changeset 3a252f78f584
Increase version number
null merge from 3.0
Improve setup.py to allow dev publication

issue3436
issue1891
review2441002