v2.9.0 - Folia support, total placeholder, and more

Holy cow, it's been 10 months since the last release. Sorry it's been so long since an update. I've still been making changes, but I made it harder to release when I tried to automate releases. Back to manual updates, hopefully slightly more often 🙂

• Fixed an error that could happen if a chat plugin returned a null prefix
• Add Folia support
• Fixed ColonTime format incorrectly parsing milliseconds
• Remove colon from past-resets file format
• Allow other types than alltime in the list command. /ajlb list <board> [type]
• Add placeholder to show the total (sum) of all players on the leaderboard
• Fixed an error that could happen if a player's name is unknown
• Prevent adding placeholders that are too long (I recommend using the shortcut expansion to make them shorter)
• Added min-player-cache-time option to allow you to configure ajlb to fetch specific players (e.g. get their position) less often
• Add fast-shutdown option. Mostly only useful for me, not recommended for most server owners.
• Add PreTimedTypeResetEvent to allow devs to add custom rewards
• Added %formatter_number_time_...% as a known time placeholder
• Update adventure-platform-bukkit (to fix hover and click things in messages not working for newer mc versions)
• Fixed 0 in time format not being detected
• Remove illegal characters from reset save file names (if they are in board names)
• Added time-format-display-seconds option, which allows you to enable/disable showing the seconds in the time format
• Added more-fetching option, which allows you to make ajlb fetch from the database less often
• Fixed head block and head item textures not being fetched correctly
• Added updater (so in the future you just have to do /ajlb update to update the plugin)
• Raise prefix/suffix/displayname max lengths
• Fixed an error that could happen if the sign format is less than 4 lines