AdvancedBan [1.7-1.15] v2.1.6 | Layered exmept permissions & dev update

[~] Rewrote complete command system and other major parts of the Plugin
[~] Fixed 23 hours 59 minutes 59 seconds issue (now displays 24 hours)
[+] Layered exempt permissions (see below)
[~] Changed notify permissions from ab.TYPE.notify to ab.notify.TYPE so you can do ab.notify.*
[~] Small bug fixes

[*] AdvancedBan is now reliably available as a Maven dependency
[*] Added JavaDocs (can be found only)
[*] Improved CI for easier and faster development/contribution

Layered exempt permissions:
Users with ab.ban.exempt can not be banned by anyone.
User with ab.ban.exempt.4 can not be banned by someone with ab.ban.exempt.2 but by someone with ab.ban.exempt.5
(Maximum level is 10 | Works with ban, tempban, mute, tempmute, ... | Works only when user is online!)