added functions that handles converting ints and floats to string while handling masked and nan cases
added functions that handles converting ints and floats to string while handling masked and nan cases

blizzardwarriorwx/SHARPpy,scollis/SHARPpy,blizzardwarriorwx/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,djgagne/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,scollis/SHARPpy,djgagne/SHARPpy,scollis/SHARPpy