accommodate change to language grammar
Initial work towards a WholeImpl in Ceylon
make Whole a class
split up Whole tests
improve wholeNumber(), use zero, one, etc consts
implemented Whole.hash
implement Whole.divide w/single word divisor
minor syntax change
implemented Whole.string
implemented Whole.float
parseWhole, adapted from parseInteger
Remove Sign, use Internal constructor for Whole
fix overflow bug
memoize Whole.string
add missing step to remainder, needed divideSimple
minor cleanups, formatting, div & mult 0 and 1
reduced normalization and Array<Integer> creation
single word multiply function
create fewer tuples
improve readability