tinythings: tiny implementations in tinygrad

Currently a small(er) nanoGPT, written in tinygrad, from scratch. Tinygrad allows acceleration on virtually any backend: probably the simplest way to write accelerated training on modern Macs.

• CausalAttention with RoPE [layers/attention.py]
• Basic FFNs [layers/feedforward.py]
• SwiGLU FFNs [layers/feedforward.py]
• Mixture of Experts [layers/moe.py]
• SGD [optimizers/sgd.py]
• Adam [optimizers/sgd.py]
• Muon [optimizers/muon.py]
• LayerNorm [utils/transformer_methods.py]
• Cross Entropy [utils/loss_functions.py]
• Naive character-level tokenization [utils/dataloader.py]
• Byte-pair encoding [utils/dataloader.py]
• Diffusion text modelling