Emborg

- Added _compare_ command.
- Added _manage_diffs_cmd_ and _report_diffs_cmd_ settings.
- Allow ~/.config/emborg to always hold settings files if user prefers.

- Fixed issues associated with *compact_after_delete* setting.

- Enhanced Emborg to support new Borg 1.2 features.
- Added *compact* command.
- Added *chunker_params*, *sparse*, *threshold*, *upload_ratelimit*, *upload_buffer* settings.
- Added the *run_before_borg* and *run_after_borg* settings.
- Added the `--cache-only` option and the ability to delete multiple archives at one time to the *delete* command.

- Fix some issues with relative paths

- Do not signal failure to hooks if Borg completes normally, even if there were warnings.
- Return an exit status of 1 if *Emborg* runs to completion but with exceptions, and 2 if it cannot complete normally due to a error or errors.

- Suppress log file generation for *configs*, *due*, *help*, *log*, *settings* and *version* commands.
- Add *version* to the API.