Bug fix for D2

* Update README with details on segmentation

* Added link to the panoptic notebook
* Added data-preparation + training instructions.

* Fix markdown

(center_x, center_y, h, w) changed to (center_x, center_y, w, h)

* Add torchscript support to panoptic models

* Fix lint

* improve robustness of plot_logs function:
- robustify logs param - checks if list, if not, deep converts to list for plotting.
- expose log name as optional param (log_name = 'log.txt') to avoid internal hard-coded references
- verify directories passed in are valid.  Raise ValueError if not with path to broken directory shown
- added parameter explanations in commments

* whitespace fixes for pylint

* pylint flake8 update for whitespace

* pylint flake8 update for whitespace, last 4 issues

* code pylint missing 2 trailing wspace, fixed

* blank line at end of file removed...

* simplified use case to path/list[path]

* 2 whitespace fixes

* one last whitespace removed

Hub config for panoptic models

* Add torchscript support for hub detection models

* Dummy commit to test CI

* Try trigger CI

* Fix lint

* Update CI to use nightlies

* Add ISSUE_TEMPLATE

* Fix

* Unifying the format of argparse

* Minor fixes

Update panoptic model hashes

* fix IndexError

* fix IndexError