Merge branch 'release/0.3.4' into develop
Next version is 0.3.5
TODO: added a task
cluda/vsize: round() in Py2 returns floating point number
pureparallel: kernel calls can now handle arbitrary global sizes
pureparallel: fixed the bug intriduced by the previous commit - wrong get_id() function was used
Maintenance release 0.3.5 --- fixes a bug with virtual sizes in Py2
Merge branch 'release/0.3.5'