Version 1.3.7
  Other:
	- Code Corrections
---------------------------------------------------------------------------------------------------
Version 1.3.6
  Balancing:
	- Damage amount (if player has no oxygen) now depends on pollution
  Other:
	- Added interface method hasgasmask(playername)
---------------------------------------------------------------------------------------------------
Version 1.3.5
  Bugfixes
	- Fixed bug when check for oxygen bottles if oxygen amount is zero: http://www.factorioforums.com/forum/viewtopic.php?f=14&t=9422&start=20#p77777
---------------------------------------------------------------------------------------------------
Version 1.3.4
  Bugfixes:
	- Fixed error when player armor is checked for gas masks: http://www.factorioforums.com/forum/viewtopic.php?f=14&t=9422&start=10#p77434
---------------------------------------------------------------------------------------------------
Version 1.3.3
  Balancing:
	- Oxygen bottles filled now each 225 ticks if the player keeps near an oxygen dispenser
  Bugfixes:
	- Fixed error: oxygen amount of player is increased to more than 100 if he keeps near an oxygen dispenser
---------------------------------------------------------------------------------------------------
Version: 1.3.2
  Features:
	- If player keeps near an oxygen dispenser, empty bottles will filled with oxygen automatically
  Changes:
	- New graphics for oxygen dispenser
---------------------------------------------------------------------------------------------------
Version: 1.3.1
  Features:
	- Gas masks halve oxygen decreasing rate
  Other:
	- Changelog now avaiable in mod directory
	- Changelog now in Factorio's changelog style (without date; subpoints divided into Features, Changes, Balancing, Bugfixes and Other)
---------------------------------------------------------------------------------------------------
Version: 1.3.0
  Features:
	- Added recipe to get oxygen from atmosphere
	- Added indicator to oxygen dispenser whether it dispenses oxygen or not
	- Implemented gas mask as equipment, but it still doesn't work
  Balancing:
	- Changed recipe to get oxygen from water: output increased
---------------------------------------------------------------------------------------------------
Version: 1.2.5
  Bugfixes:
	- Oxygen-handlers for player and dispenser are no longer commented out
---------------------------------------------------------------------------------------------------
Version: 1.2.4
  Bugfixes:
	- Fixed error: check if player has bottles in inventory while he's dead (Multiplayer)
---------------------------------------------------------------------------------------------------
Version: 1.2.3
  Other:
	- Added modding interface for modders (methods to change (decrease/increase), set and get oxygen amount of players)
---------------------------------------------------------------------------------------------------
Version: 1.2.2
  Balancing:
	- At the beginning of a freeplay in your inventory are 10 big oxygen bottles instead of 5 (so you can alive 122,2 game-minutes)
---------------------------------------------------------------------------------------------------
Version: 1.2.1
  Balancing:
	- Changed oxygen decreasing rate of dispenser
---------------------------------------------------------------------------------------------------
Version: 1.2.0
  Features:
	- Aliens and Spawners get damage from oxygen dispenser
	- Added technologies
---------------------------------------------------------------------------------------------------
Version: 1.1.0
  Features:
	- Added oxygen dispenser
	- Added Multiplayer compatibility
---------------------------------------------------------------------------------------------------
Version: 1.0.1
  Features:
	- Works only in freeplay and new games
	- If no oxygen, health decreases now by 5 each 250 ticks instead of each 500 ticks
---------------------------------------------------------------------------------------------------
Version: 1.0.0
	- First release