* removed policy from save, changed th.loads to map to device
* found hack: catch pickle exception and trying th.load with mapping instead, otherwise raise exception with more information -> loading cuda on cpu raises exception -> leads to th.load with map being called
* deleted todo
* updated changelog
* start of saving refactor
* first working c
* all tests pass, save refactored
* - backwards compatibilty not always
- make pytest all passing
- make typing all passing
* Fixes and simplify the save method
* Remove unused param
* Fix backward compat
* Fix docstring