REL: set version to 0.10.0

REL: set version to 0.10.0rc1.

REL: set version to 0.10.0b2

REL: set version to 0.10.0b1

REL: set version to 0.9.0.

REL: set released=True in setup.py (for 0.9.0rc5).

REL: set version number to 0.9.0rc4.

REL: set version number to 0.9.0rc3.

REL: set version number to 0.9.0rc2

REL: set version number to 0.9.0rc1, released=True