Added a float option to io_input and text_input functions.
Added float as a type to accept in math_arithmetic.
Added a stringEnds block to logic for str.startswith and str.endswith.
Added a simplified while loop (that doesn't do until, like the existing one).
Changed the counting for loop block to make up and down simpler in Python.
More work is required on this to fix the generated Python.
Moved all of the loops into a loops_ namespace rather than controls_.