Tag for alpha 1 on 0.7.1 release

Final 0.7 release.

Release candidate 2 for 0.7

Release 0.7rc1

release 0.6

Relase 0.6rc5 as their was a problem with pypi registration of 0.6rc4.

0.6rc4 release

0.6rc3

0.6rc2 release

tag for 0.6rc1