LuaDate v2.1

Lua Date and Time module for Lua 5.x.

Features:
	* Date and Time string parsing.
	* Time addition and subtraction.
	* Time span calculation.
	* Support ISO 8601 Dates.
	* Local time support.
	* Lua module (not binary).
	* Formats Date and Time like strftime.
  
Changes:
 v2.1 Lua 5.2 support. Global 'date' will no longer be set.
 v2.0 original by Jas Latrix