Added tag 8.2 for changeset 995f6d965131
Bumped to 8.3 in preparation for next release.
Silence PEP440Warning by default unless invoking easy_install
Merge pull request #23 from dstufft/silence-pep440-warnings

Silence PEP440Warning by default unless invoking easy_install
Update changelog; fixes #306.
Bumped to 8.2.1 in preparation for next release.