Func-adl-xaod

Minor changes

New Features:

* The addition of the `Range` operator - so you can iterate over sequences (of integers, for example)
* CMS Run 1 AOD's are now supported as a translation target

Internal:

* Major re-org of files and repo layout as we move to supporting multiple target backends

First beta release of the new(ish) `func_adl_xAOD`. While I hope no external API's have changed, there has been lots of internal stuff:

- You can now ask for a `dictionary` for your columns, and the column names will be the keys, and the values will be the `ast`'s in the values
- The `AsROOTTTree` is no longer required but still supported.
- Lots of code that had to do with running, not generating the C++, has been removed. As needed, this can be put into another package.
- Fixed a warning from CMAKE due to the files produced by this package
- Internally, there is better code coverage, and testing on 3.7-3.9 now.

This test the pypi auto-publish being added to this repo

We were trying to do it the hard way - and as a result exceptions weren't getting passed along.