[Fix #158] fix bug in PropMemberEnum

- and also in PropNotMemberEnum
Merge branch 'develop' into feature-issues

Conflicts:
	CHANGES.md
Merge with develop
Merge with develop
Merge with develop
Merge branch 'feature-issues' into develop
#92: prepare script
[Fix #92] done
[Fix #165] reset AbstractSearchLoop.decision on a call to reset (and freed all pending decisions computed during the resolution)
Merge branch 'feature-searchloop' into develop
[Fix #163] Constraint.isSatisfied() should not assume the constraint has been propagated once
[Fix #152] correct constraints dynamic addition

- rename Solver#postCut() in Solver#post() and Solver#post() in Solver#postTemp()
- create unpost method in Solver
- correct AbstractVariable#unlink()
- add IPropagationEngine#dynamicDeletion
- PropagationTrigger now manages 3 types of constraints: ones posted before resolution began, ones posted permanently after resolution began and ones posted temporary after resolution began.

and remove LightVariableEngine (useless)
Merge branch 'feature-dyna' into develop
FIX#167
new Among propagator

Simpler implementation
- no more advise method
- no more delta monitor
Should be faster (count like incrementality)
changes
Merge branch 'feature-fix' into develop
Merge branch 'develop' into feature-JGTestNoMerge