* clean up unused imports in examples
* enable unused import checking in examples
* lint
* ignore F541 and F841 - focus on unused imports only
* clean up
* restore tinygrad.frontend.torch for TINY_BACKEND
* tiny change
* make beautiful indexing use a Variable
* stunning test
* better color
* training is broken
* fix tests
* fix variable indexing
* fix test
* no contiguous
* revert that
* revert that too
* indexing two bind
* skip for webgpu
* make not slow