1am3r/PlayerMarkers — pull request #4 by UltraMC (2014-01-18 09:35:16+00:00)
Title: UltraMC, hide sneaking & invisible (potion) players.

Configurable option is:
if player is invisible and his head will be not dislpayed (for
Overviewer map id 4 for example) we can decide to include that player in
JSON with "invisible ID" or not even send data of that player at all.