Increase version number
Missing CHANGELOG
(transplanted from 8e48753894e3f14857a6733bdb7b191537b394d5)

--HG--
extra : transplant_source : %8EHu8%94%E3%F1HW%A6s%3B%DB%7B%19%157%B3%94%D5
Prepare release 3.0.1
Added tag 3.0.1 for changeset ac70bbdf069e
Increase version number
null merge from 3.0
Improve setup.py to allow dev publication

issue3436
issue1891
review2441002
Fix scenario when switching user

review4261002