* Added the possibility to wear the armor on rightclick backported
from https://github.com/minetest-mods/3d_armor/pull/16
* fix not being able to place armor on anvil due new right click
* fix armor equip/unequip initial implmentation
that backports https://github.com/minetest-mods/3d_armor/pull/17
solving a number of problems with the new right-click armor equipping
* fix callbacks not being called by armor.equip() and `armor.unequip()`
* fix player physics player_physics_locked attribute
* add feather falling
* prevents a crash when a pipeworks deployer tries to equip armor
* Fix typo in wieldview caused by skindb crash when player joins
* update and added nether lava and lava crust to fire protection list.
* fix bug Armor still damageable in (pvp) protected area
* Fix detached inventory vulnerability complete checks
* Fix count when armor is destroyed, option to prevent physics override
* update version to 0.4.15 that works with 0.4.X and 5.X engines
