untitaker/vdirsyncer — pull request #137 by untitaker (2014-11-23 10:33:17+00:00)
Title: Make sync more performant

- This commit rewrites the sync algorithm to use the new upload_multi,
update_multi and delete_multi methods for storages which support them.

- That change doesn't do anything useful for most storages, but
singlefile-storage benefits tremendously from this.