Betty 0.1.0

Initial release 0.1.0 for Betty.

Highlights

• Implemented Problem and Engine classes as abstractions for multilevel optimization & generalized meta-learning.
• Initial documentation and API reference.
• Examples for HPO, NAS, data-reweighting, domain adaptation for pretraining & finetuning, implicit MAML.
• Training with gradient accumulation.
• FP16 training.
• Non-distributed data-parallel training.
• Initial suite of tests.