NoTorch: Neural networks in pure C (2-file library, BitNet 1.58) [P]

I'm tired of `pip install torch` eating 2.7 GB every time I want to train a 10m-param model, so I wrote NOTORCH: a complete neural network training/inference library in pure C. Two files (`notorch.h` + `notorch.c`, ~3300 LOC). No Python. Enough. Compiles (under a second): ''' cc -O2 notorch.c your_m