Add entity invulnerable
Merge branch 'master' into GlobalFixes
Change m_InvulnerableTicks description
Change m_InvulnerableTicks description again.
Change m_InvulnerableTicks description again again :D
Fixes
Withers now use the new invulnerable.
Changed the old invulnerable methods from the wither to the new.
Revert "Changed the old invulnerable methods from the wither to the new."

This reverts commit d50f8f6f11f69e7e1e56be92fb2d72a5014a3e34.
Revert "Withers now use the new invulnerable."

This reverts commit 619592b5a0ab651e714d55932bc7909e4204cee9.
Merge pull request #940 from Howaner/GlobalFixes

Add entity invulnerable