License of source code:
-----------------------
Copyright (C) 2012 PilzAdam
modified by BlockMen (added sounds, glassdoor, trapdoor)

This program is free software. It comes without any warranty, to
the extent permitted by applicable law. You can redistribute it
and/or modify it under the terms of the Do What The Fuck You Want
To Public License, Version 2, as published by Sam Hocevar. See
http://sam.zoy.org/wtfpl/COPYING for more details.


License of sounds
--------------------------------------
Opening-Sound created by CGEffex (CC BY 3.0), modified by BlockMen
  doors_door_open.ogg
Closing-Sound created by bennstir (CC BY 3.0)
  doors_door_close.ogg
Steel door sounds open & close (CC-BY-3.0) by HazMatt
  - http://www.freesound.org/people/HazMattt/sounds/187283/
  doors_steel_door_open.ogg
  doors_steel_door_close.ogg

License/authors of texture files
--------------------------------------
CC-BY-SA 4.0

Modified from the textures of mcl_mushroom and XSSheep's Pixel Perfection Legacy by Github user 3raven :

mcl_doors_door_crimson_lower.png       
mcl_doors_door_warped_lower.png       
mcl_doors_trapdoor_crimson.png
mcl_doors_door_crimson.png             
mcl_doors_door_warped.png             
mcl_doors_trapdoor_crimson_side.png
mcl_doors_door_crimson_side_lower.png  
mcl_doors_door_warped_side_lower.png  
mcl_doors_trapdoor_warped.png
mcl_doors_door_crimson_side_upper.png  
mcl_doors_door_warped_side_upper.png  
mcl_doors_trapdoor_warped_side.png
mcl_doors_door_crimson_upper.png       
mcl_doors_door_warped_upper.png