Function killAllObservers implemented (#43)
Merge commit '9f86400ed47fefe22feb05e3ab63172137eea09d'

* commit '9f86400ed47fefe22feb05e3ab63172137eea09d': (32 commits)
  Type Coord was completely removed from TerraME. #51
  Type Coord was completely removed from TerraME. #51
  Type Coord was completely removed from TerraME. #51
  Adding metatables to Flow, Jump, and State, to allow testing __tostring.
  Indentation was corrected and useless code were removed.
  bug in CellularSpace:notify removed.
  loadShape is now a local function (instead of a method from CellularSpace).
  add test to verify() and split __tostring tests to the own types.
  add test to readCSV.
  add notify test to CellularSpace.
  saveShape removed #50
  verify moved from Model.lua to Utils.lua
  test to init() added. Small bug on notify() removed.
  new basic and alternative tests for Society.
  Agent.getId and Agent.setId are now deprecated.
  tests for function notify added (and some bugs related to this were removed).
  Allow Event functions to be tested.
  #48 solved (test deprecated functions).
  metaTables were set global to allow testing __len. __len tests added.
  Indentation problems removed.
  ...