* ** rangeify, try 3
* bring that over
* bufferize, don't use contig tag
* work
* ish
* fix rangeify
* flash attention is back
* fix rangeify tests
* stuff passes
* fix test_log_softmax
* more stuff passes
* progress children
* new endrange solution
* progress
* progress counter
* basic assign
* contigs only
* symbolic in schedule
* unbind_kernel
* late children
* ops fixed
* beautiful mnist is close
* that seems to work
* mnist works
* improve names
* fix bmnist
* no pcontig
* testing backward
* work
* clone movement ops
* new_range helper
* MBLOCK/MERGE
* ops tests pass
* revert mblock stuff
* cleanups...but it breaks ops
* remove reindex
* hack for relu
* disable the hacks
* more hacks
* upd
* mostly works with cleanups disabled
* ndr
* ops tests pass
* terrible hacks for indexing to work
* context mismatch
* pcontig
* split pcontig v contig
* z3 trunc
* null
* no fuse in rangeify
* ops test passes
* lnorm
* fix assign
* nd rangeify
* both should work
* tests for rangeify
* cleanups
* stores pass the pointer through
* disable pcontig for now
* PARTIAL_CONTIG is a flag
