* no of categories for efficientnet
* need layer_init_uniforn
* merge fail
* merge fail
* batchnorms
* needs work
* needs work how determine training
* pow
* needs work
* reshape was needed
* sum with axis
* sum with axis and tests
* broken
* works again
* clean up
* Update test_ops.py
* using sum
* don't always update running_stats
* space
* self
* default return running_stats
* passes test
* need to use mean
* merge
* testing
* fixing pow
* test_ops had a line dropped
* undo pow
* rebase