Andrija

Add the smothing option for 1d-marginals

2

Following up on the discussion presented in [this](https://github.com/dfm/corner.py/issues/214) issue.

Misplaced **hist_kwargs?

4

It seems that [this](https://github.com/dfm/corner.py/blob/e65dd4cdeb7a9f7f75cbcecb4f07a07de65e2cea/src/corner/core.py#L240) line inside core.py contains **hist_kwargs argument, even though it is a matplotlib.pyplot function that is called. Should instead this be passed a few lines above to...