math lib is no longer added to _exec_globals

[dnparadice]

removing the option to import math on launch (it is now required) skips adding math to the _exec_globals dict but it should be in there so you can call math directly if you so choose like 'math.sin(3)', note that calling sin(3) works because all the math functions have a wrapper but calling 'math.sin(3)' is broken because math is not found in the _exec_globals any more.