git-when-merged

This release incorporates an old error-reporting fix plus the boilerplate needed to release the project to PyPI (from which the project can now be installed; see the README for instructions).

This version adds some new options:

• --show-commit: Display only the SHA-1 of the merge commit. Exit with a nonzero exit code if the commit was not merged via a merge commit. This option is meant to make it convenient to call git when-merged from scripts.
• --show-branch: Display all of the commits that were merged at the same time as the specified commit (e.g., the whole pull request branch). This option also interacts nicely with --log and --visualize.
• --describe and --describe-contains: Describe the merge commit in terms of nearby tags (i.e., pass it through git describe or git describe --contains).

This is a bugfix release for version 1.1.0.

Add two new options:

• --recursive/-r: If the commit was merged via multiple merges, find all of them.
• --log/-l : Show the log message for the merge commit (i.e., without the diff). This seems more useful than --diff.