2.0-RC5

• TerraME can now read .qgs files
• New function Layer:box()
• Agent can now work as class to implement inheritance
• Random numbers now use Boost library
• New Random distributions
• New tutorial Publishing Geospatial Data
• Event with period zero will execute only once.
• No backward compatibility:
  • CellularSpace:geometry = true as default
  • Trajectory/Group:rebuild() reviewed
  • Neighborhood cannot add a Cell twice anymore
• 12 bugs fixed