added update, set, and fetch
initial pass at stateM
stateM added update, set, fetch
fix to make mzero a function
change to use StateM instead of parser
fix update bug
added empty array checking to _mconcat, and changed jsmonads to use stateM instead of parser
fixed item() to fail with empty list, added tests
fix in for list.mplus and test for parcomb.many
fix for sebBy and more tests
removed reference to parser file, alias to stateM List
added test case for parcomb.chainl1