Release 2.6-beta for UE4.18
- Fix #64 and #66 trailing spaces in some user-names mess with file locking
- Ask the user and Stash/Unstash on Sync if there are modifications to the working tree
- Add commit sha1 and summary to the status
- Add a global "Revert" operation
- Make the global "Sync" (Pull) operation Asynchronous
