mz-sample for the 'less than' and 'greater than' blocks
mz-sample for the 'identity' and 'square root' blocks
mz-sample for the 'mod' block
update modulo.py to use float() instead of int() to convert Colors
mz-sample for the 'division' block
mz-sample for the 'product' (multiplication) block
mz-sample for the 'minus' block
mz-sample for the 'plus' block
mz-sample for the 'box' and 'store-in' blocks
remove obsolete mz-samples that were left over from a bug that's fixed now