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