New Inheritance Concept

Look to be OK, but need to be test, and the example must have a better documentation
Merge branch 'master' into DEV
New technical structure ! Very importants change

Documentation need to be update / Class must to be test and test again.
Delete Condorcet.NewMethod.class - (Extend Example).php

Old simulation pour extend class.
News stats system
Better error system
Many improvement about object structure
New file algos structure
Update documentation for 0.3
Version 0.3
Bugfix on method get_Pairwise
Bugfix with get_winner / get_loser
Correct the doc
Bugfix about object method in constructor