Perfact-zodbsync

* Add support for a whitespace-separated list of recipient addresses for the
codechange email.

* Make reformat robust against newline changes

* Make meta files more diff-friendly

* Add new config variable to force default user usage

* Avoid piping git output to pager

* Restart on filesystem diff

* Check for missing meta files during git operation

* Switch fix_encoding to return dict instead of list of tuples

* Make sure to roll back a failed `pick` even if the list of changed files is
too long for the command line (92)

* Add test to check that unchanged objects and paths are not actually
updated

* Correctly playback type changes of properties