* switch symbolic from old to uops, final PR
* two wrong answers
* not needed resolves
* symbolic ops passes
* symbolic ops passes
* progress
* tests pass (almost)
* fix last test
* fix some tests
* global binding and unbinding
* Revert "global binding and unbinding"
This reverts commit 9456725630.
* that test works now
* vars on uop doesn't recurse
* fix fuzzer
* update
* fix type
* fix gpt, it's UOp now
* ssimplify symbolics
* fix mean underflow for half tensor
divide only the reduce factor. added unit test and non-nan assertion in resnet training. also added a failed test cast for symbolic shape var
* skip for python backend