0.0.4 2011-12-9)
  - Added minimum kwarg to the mutual_overlaps method   [FEATURE]
  - Raises a LogicError if a person tries to make a (INFINITY, INFINITY) bound [FEATURE]

0.0.3 2011-12-8)
  - Fixed infinite recursion in __rand__                [BUG]
  - Added __rxor__ method.                              [FEATURE]
  - Fix infinite comparison with datetime objects.      [BUG]
