Merge branch 'release/3.3.2' into develop
AcceptEnv is more flexible.
add cmake and qt for pyside.
Install Cython from PIP and not from the packages. More recent.
Get into the virtualenv before installing dev_*(), this will avoid Cython compilation problems.
(followup previous patch) init the virtualenv before installing components.
bump version in __init__.py
Merge branch 'release/3.3.3'