Merge pull request #152 from sbesson/150_mergeable

Add simple check for mergeable status in find_candidates()
Merge pull request #153 from sbesson/branch_tracking

Add first implementation of branch tracking in `scc merge`
Revert "Add simple check for mergeable status in find_candidates()"

This reverts commit 920bb3718a2818bbf9ef86414d45ff343dd94076.
Merge pull request #155 from sbesson/non_mergeable_revert

Revert "Add simple check for mergeable status in find_candidates()"
Add comment for PullRequests with a description

When passing `--comment` to scc merge, Pull Request with no description
should be commented during the merge operation.
Flake8 the entire repository including setup.py
merge master -D org: PR 156 (Add comment for PullRequests with a description)
merge master -D org

Repository: openmicroscopy/snoopycrimecop
Already up-to-date.

Merged PRs:
  # PR 156 sbesson 'Add comment for PullRequests with a description'

Generated by SCC-merge#284 (http://ci.openmicroscopy.org/job/SCC-merge/284/)