cjsnjr.2019-03-28.0

This implements fast-forward functionality: if the local release branch has a tracking branch, fast-forward the release branch to the tracking branch head. This makes fetch / git-commit-filetree / push Just Work when others are also adding commits to the release branch.

cjsnjr.2019-03-23.0

This is effectively the same as version cjsnjr.2016-02-19.0; the only changes since that have been in the comments and one minor, unused Bash setting. This release does not do automatic fast-forward of local branches to tracking branches.