* move files into uop dir [pr] * tinygrad.uop is a thing * fix uop docs, no pr * fix viz
* do not open devices in lowering [pr] * ctx=opts * ctx * fuzz test
* fast idiv with tests and fuzzer * Add todo comment * Add env variable to toggle fast_idiv * Move env check * Add fuzz fast_idiv to ci --------- Co-authored-by: chenyu <chenyu@fastmail.com>