Dependency

pytorch verison: torch-2.10.0.dev20251019+cu126
torchao version: torchao-0.15.0.dev20251015+cu126

Full Changelog: v0.1.0...v0.2.0

This is the first pre-release of torchtitan, following the release practice outlined in #688.

torch version: torch-2.8.0.dev20250617+cu126
torchao version: torchao-0.12.0.dev20250617+cu126