v29: Merge pull request #107 from NuclearNic/expose-branch-commit-hash

populate file with latest commit hash of PR branch

v28: Merge pull request #104 from drnic/user-info

• Output user of the PR to the meta data Thanks @drnic

v27

Output the git config meta values into files in the .git/ directory. Thanks @mazubieta

v26

Support evaluating the concourse BUILD environment variables in a context.

v25

• support caching of API requests to Github. This decreases hitting the
  rate limit per hour. It does not reduce the number of request, though.

v24

• README.md updates from @cjcjameson and @richarddowner
• Add support for git-lfs

v23

• update LICENSE file
• support filtering PRs with a specific label

v22

• remove default --depth 1 when none is specified

v21

• support multiple contextes in a single put
• specify depth and submodule on a git clone
• fix typo in README Thanks @trizko
• fix issue with Github API proxying Thanks @databus

v20

• disable PRs that were made from forks with disable_forks Thanks @henrytk
• PRs only trigger when matching paths or ignore_paths Thanks @ahume
• refactored so adding filters is easier and testable
• finally deprecated every, you should always be using version: every