WindLy: Methods for Operations (Set-operations, Insert, Remove ...)

[hoppfrosch]

New Methods to be implemented:

• Simple Operations
  • Insert() - Insert a new Windy-Instance
  • Remove() - Remove a Windy-Instance
• Set Operations (see: http://en.wikipedia.org/wiki/Set_theory)
  • Union
  • Intersection
  • Set difference
  • Symmetric difference

This is a base to perform actions (to be implemented) on a dedicated set of windows. This set of windows should be easily to construct using WindLy (for example: Close all windows on monitor except the currently active window)