1.10.0: Save Counters, Cleanup, and Minor Fixes

Fixed ouroboros logo images for Apprise notifications being pulled from no longer active links. Images are now stored in and pulled from the GitHub repo

Updated the cron timer to use the configured timezone (-tz, --timezone, env TZ) instead of UTC for scheduling

Implemented the latest_only flag, which was previously missing

Fixed the before_self_cleanup hook potentially receiving the locals for old_container and new_container reversed

Added the ability to preserve the total_updated count when a self-update occurs, via the new -sc or --save-counters command line arguments, or the SAVE_COUNTERS=TRUE environment flag #7

Python bumped to 3.10.4 by dependabot

Some minor code cleanup, recommended by Codacy