Merge pull request oauth2-proxy#247 from pusher/release-v4.0.0

Update changelog for v4.0.0 release

Merge pull request oauth2-proxy#123 from pusher/release-3.2.0

Update changelog for release v3.2.0

Merge pull request oauth2-proxy#50 from pusher/release-v3.1.0

Update release notes for v3.1.0

Merge pull request oauth2-proxy#13 from pusher/release-3.0.0

Release 3.0.0

Merge pull request oauth2-proxy#380 from jehiah/release_380

Release v2.2

Merge pull request oauth2-proxy#193 from jehiah/release_193

A new tag

tag v2.0.1

Merge pull request oauth2-proxy#111 from jehiah/version_two_111

Release Version Two

tag 1.1.1

Merge pull request oauth2-proxy#56 from jehiah/release_56

Cut a new release