update NEWS for 0.13 release

update NEWS for 0.12 release

update NEWS for 0.11 release

make SECP256K1 visible in __init__.py, release 0.10

update README with py3.2/3.3 compatibility

update NEWS for 0.8 release

update NEWS for 0.7 release

setup.py: use --tags when asking git about the revision, otherwise it…

… fails.

Release 0.5 of python-ecdsa.