adding some ideas about returning up graphs
fixed recursive error, 3 s productions breaks the parser
updated revisedgrammar to keep it in line with master. not the git way to do things
started working on new grammar changes
can parse multiple separate expressions now
removed old comments
added a string method for Parser
cleaned up how the parsing stage shows success
began adding statement parsing
added statements to expr, removed redundant assignment
started adding code for processing statements
fixed if and while statements
keeping dfas.py up to date with master for purposes of testing
added code for if statements
removed graph as a parameter to the productions since it wasn't used
began work on while and exprlist
forgot brackets around varlist
Added while, exprlist
while and exprlist fixed and working
merged return_graph into master