Updated the arithmetic operator table in the parser: I noticed it was not programmed to work exactly as I had intended it to, so I fixed it.
Fixed the random generator for the 'Dao.Evaluator.AST_Arith' node: I noticed the code was pretty old, and did not reflect many changes that have been made over the past few months. I was prompted to update it after certain tests had failed indicating it the random generator was producing arithmetic expressions that did not obey the order of operations.