Alpa

- [Feature] Serialize Parallel Plan (587)
- [Test] Move test install to alpa package (584)
- [CI/CD] New PyPI Infra (577)

- [Tutorial] Serve OPT-175B (https://alpa-projects.github.io/tutorials/opt_serving.html)
- New website
- Better weight conversion scripts
- [API Change] Move layer construction decorators to ParallelMethod (565)

- Interface change (https://github.com/alpa-projects/alpa/pull/540)
- Minor bug fixes

Major feature updates:
- Support serving Meta's open source OPT model 175B
- Distributed weight init
- Add a set of strategy-specific interfaces such as DataParallel, Zero2Parallel, Zero3Parallel

Minors:
- enhancement on the PyTorch frontend
- many bugfixes
- Doc update: Performance tuning guide, and a slide deck for Alpa

- PyTorch experimental support by yf225
- small changes of interfaces on auto sharding