sexprs.py : Int constructor was changed to work with strings instead of int(), reader: Parser for Hexadecimal numbers was added (hexNumberParser,hezLetters, hexSecondSign, hexFirstSign) and the parser calls Int() constructor
sexprs.py:: i changed the asStringVisitor of fraction to support strings instead of ints, i also change init of fraction as well. reader.py:: i adder a parser named test so that we won't need to put our other tests in comments anymore. test_sexprs.py:: arrenged all the tests to be active
reader.pt :: added pair parser
reader.py:: added parser to pair, sexpers:: updated Pair constructor and Pair toString, test_sexprs.py:: added some tests
reader.py:: pairParser has been completed, test_sexprs.py:: added some tests to pairParser, sexpes:: Pair constructor was updated, and the str as well
reader.py:: intParser,hexParser,fractionParser where updated to work with numbers instead of strings, test_sexprs.py:: tests where updated relativity
reader.py:: everything is now global!!!, sexprs.py:: readFromString function was updated to call match on sexpression
merge with dror - success