1.6.4

• Support Lfm2VlForConditionalGeneration
• Support Nemotron 3.5 Bolt (extend NemotronHForCausalLM)
• Fairer prefill/decode scheduling for concurrent requests
• Fix some TP/shmem issues
• Fix context overrun when requeuing and drafting is enabled

Full Changelog: v1.6.3...v1.6.4