* Set precision=16 when use_amp is passed as True
* Update CHANGELOG.md
* add use_amp to deprecated API
* Update trainer.py
* Update trainer.py
* move the use_amp attribute to deprecated API
* move use_amp deprecation back to Trainer's __init__
* drop unsed
* drop deprecated
* reorder imports
* typing
Co-authored-by: Jirka Borovec <Borda@users.noreply.github.com>
Co-authored-by: William Falcon <waf2107@columbia.edu>
Co-authored-by: J. Borovec <jirka.borovec@seznam.cz>