v0.21.0

• [f2e8c90] build(*): bump version to 0.21.0 (#244)
• [795d375] build(deps): update safetensors requirement from ~=0.3.2 to ~=0.3.3 (#243)
• [ec987bd] build(deps): update transformers[sentencepiece] requirement (#242)
• [534c27e] build(deps): revert accelerate requirement (#239)
• [5cb714e] build(deps): update accelerate requirement from ~=0.20.3 to ~=0.21.0 (#228)
• [08799a7] build(deps): add scipy to dependencies (#238)
• [91fef14] feat(model): add MPS support for Apple Silicon
• [a602fcc] build(deps): update safetensors requirement from ~=0.3.1 to ~=0.3.2 (#236)
• [d5f1bdd] build(deps): update bitsandbytes requirement from ~=0.41.0 to ~=0.41.1 (#235)
• [f1b0c1e] build(deps): update bitsandbytes requirement from ~=0.40.2 to ~=0.41.0 (#233)