Danling

Commits
- 3fde8a1: catch import error of gitpython (Zhiyuan Chen)
- 121ebde: fix batch_size could not be inferred when no dataloaer found (Zhiyuan Chen)
- 725dd52: fix accelerate args not parsed (Zhiyuan Chen)
- cb746fd: ensure access state in runner (Zhiyuan Chen)

Commits
- 0b8da5f: save all json serialisable objects to RunnerState (Zhiyuan Chen)

Commits
- 55d1d03: move default variables to default file (Zhiyuan Chen)

Commits
- 8681a18: improve docs on runner directory (Zhiyuan Chen)
- 41a02e0: fix getattr in extreme cases (Zhiyuan Chen)
- 9a436d6: no longer print results at exit (Zhiyuan Chen)

Commits
- c8e6a7f: imporve error handling of gitpython (Zhiyuan Chen)
- af9c18e: update docs of gitpython (Zhiyuan Chen)

Commits
- df43cd7: rename freq to interval (Zhiyuan Chen)
- c76fe13: fix scale_lr (Zhiyuan Chen)
- fba0505: update __init__ (Zhiyuan Chen)
- 46f56ee: check interval > 0 (Zhiyuan Chen)