Pelutils

- Fix error where the full stacktrace was not printed by log.throw
- `set_seeds` now checks if torch is available

This means torch seeds are still set without needing it as a dependency

- Make Unverbose class private and update documentation
- Update formatting when using .input

- Add input method to logger

- Better logging of errors

- Removed torch as dependency

- Logger is now a global variable, `log`

Logging should happen by importing the log variable and calling `.configure` to set it up

To reset the logger, `.clean` can be called
- It is still possible to just import `Logger` and use it in the traditional way, though `.configure` should be called first
- Changed timestamp function to give a cleaner output
- `get_commit` now returns `None` if `gitpython` is not installed