0.29.0

• New model --model sd2 : Stable Diffusion 2
• New sampler dpm++: DPMSolverMultistepScheduler Empirically, sampling by DPM-Solver with only 20 steps can generate high-quality samples, and it can generate quite good samples even in only 10 steps.
• New device --device mps: M1/M2 Apple Silicon support, make sure your torch version is 1.13.0. In theory, Lama Cleaner's code is device agnostic, but I don't have an M1 device to test it on, so if you encounter any problems, please try to provide a full screenshot of the error when opening an issue. Or just submit a PR to fix the problem, I'd appreciate it! ☮️ ✌️