feat: add high-level Tokenizer API with all 4 variants#12
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- Tokenizer(units, merge_size, connected) — configurable base class
- BPETokenizer, BNETokenizer, BoundlessBPETokenizer, SuperBPETokenizer
- Units can be string ("utf8_clusters", "utf8", "characters") or callable
- 10 tests covering all variants, custom units, error handling
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
Tokenizer(units, merge_size, connected)— clean configurable base classBPETokenizer,BNETokenizer,BoundlessBPETokenizer,SuperBPETokenizerconvenience classes"utf8_clusters","utf8","characters") or callable.train()/.get_merges()APIStacked on #11.
What improved
tok = BPETokenizer(); tok.train(texts, num_merges=100)GraphSettingsmutation)Test plan
ruff check .passes🤖 Generated with Claude Code