Custom NPCs

Re-upload to fix npcs halfway into the ground.

- IChunUtil fix
- Item quest completion fixes
- pixelmon 7 compability fix
- possible crash fix for @Xhatz
- some scripting things
- playerdata delete fix
- builder block instant build rotation fix
- pixelmon scripting fixes
- flying speed fix
- npcs with different models sitting when not supposed to
- fixed npc sounds being different on servers
- new command for scripters /noppes script run
- availability option quest before now works properly on repeatable quests
- lot of scripting things https://github.com/Noppes/CustomNPCsAPI/commits/master
- new borderblock/waypoint/builderblock textures thanks to max100500profi
- script chest container fix
- availability quest before fix
- Availability quest Before fix
- Availability quest Can Start option added
- PlayerMail scripting functionality
- Walking path ai fix
- Small tweak to flying
- Shift click in Custom Chest Gui fix
- nearby npcs change to all npcs
- new texture selection
- puppet scripting fix
- skin fixes thanks to KuBi
- bodyOffsetX/Y/Z sync fix
- texture gui selector improvements
- no eye blinking when dead

- All scripting/Api changes can be found at https://github.com/Noppes/CustomNPCsAPI/commits/master

And now going to start updating to 1.13 and 1.14, only bug fixe updates left for 1.12