Fixed#135: Change services service priorities
Fixed#136: ErrorManager: Implement recognize_error
Fixed#137: BNFNodeParser : Error when parsing regex with sub parsers
Fixed#138: get_last_errors(): real errors sources are lost
Fixed#139: OneError return value removes the origin of the error
Fixed#140: Concept variables are not correctly handled when parsing sub expression
Fixed#143: Implement has_unknown_concepts()
Fixed#35 : Refactor test helper class (CNC, CC, CIO)
Fixed#36 : Concept values are not used when declared with variable expression
Fixed#37 : Objects in memory lose their values are restart
Fixed#38 : func(a=b, c) (which is not allowed) raise an exception