- collector.collect() now returns 4 extra keys: rew/rew_std/len/len_std (previously this work is done in logger) - save_fn() will be called at the beginning of trainer
* add makefile * bump version * add isort and yapf * update contributing.md * update PR template * spelling check
- rename BasicLogger to TensorboardLogger - refactor logger code - add WandbLogger Co-authored-by: Jiayi Weng <trinkle23897@gmail.com>