Allow operators in if condition assignment expressions in credo

Author: zoldar

.credo.exs

@@ -124,7 +124,7 @@
           {Credo.Check.Refactor.RejectReject, []},
           {Credo.Check.Refactor.FunctionArity, []},
           {Credo.Check.Refactor.LongQuoteBlocks, []},
-          {Credo.Check.Refactor.MatchInCondition, []},
+          {Credo.Check.Refactor.MatchInCondition, [allow_operators: true]},
           {Credo.Check.Refactor.MapJoin, []},
           {Credo.Check.Refactor.NegatedConditionsInUnless, []},
           {Credo.Check.Refactor.NegatedConditionsWithElse, false},