#162 preserve the xmlns:user namespace when saving a file

Setup Github Actions to eventually replace travis-ci

Create python-package.yml

We are using this script for all our Tableau content.

Docs update - cherry picked from development

python 3.5 hasn't been updated since 2014 and left official support in 2020
https://endoflife.date/python

3.10 not available yet oops

## 08 (October 2021)
* See dashboards in a workbook
* Add shapes property
* Add custom sql
* Drop python 2, add up through 3.9

Co-authored-by: Tyler Doyle <t8y8@users.noreply.github.com>
Co-authored-by: r-richmond <rrichmond.gh@gmail.com>
Co-authored-by: Russell Hay <RussTheAerialist@users.noreply.github.com>
Co-authored-by: Jared Dominguez <jdomingu@users.noreply.github.com>
Co-authored-by: Kernpunkt Analytics <F.Eggert@kernpunkt.de>
Co-authored-by: doulam <doulam@netflix.com>
Co-authored-by: Kevin Glinski <kevin.glinski@Inin.com>
Co-authored-by: Russell Hay <russell.hay@gmail.com>
Co-authored-by: Dave Hagen <d45@users.noreply.github.com>
Co-authored-by: martin dertz <martydertz@gmail.com>
Co-authored-by: dev-mkc19 <mr.mkc19@hotmail.com>
Co-authored-by: Jared Dominguez <jred51@gmail.com>
Co-authored-by: Ben Lower <github@benlower.us>
Co-authored-by: Patrick Carlson <carlson2442@gmail.com>
Co-authored-by: Graeme Britz <gbritz@tableau.com>
Co-authored-by: Jac Fitzgerald <jac.fitzgerald@salesforce.com>

See https://docs.travis-ci.com/user/languages/python/#pypy-support

updated submiting to submitting

- fix header link to new forums location
- point Download button to the Releases page instead of a specific zip file

Minor doc improvements

* Update documentation
* add workbook interiors listing
* add some pretty printing of field data
* Update filtering.twb to include newly supported geocoding data
* switch from ElementTree to lxml

Co-authored-by: Mikhail K <mr.mkc19@hotmail.com>

github doesn't support if on steps

Fix typo

Catch up development branch with current master

Remove extra print statement recently added for debugging

Prep v0.11 release

Prep v0.11 release

- clarify this is an unsupport library "as is" (we already mention that in the readme, but not in the docs)
- update to a better link for Hyper API

Clarify in docs this is an unsupported library

Documented the dashboard method

Fix typo

@gus W-17274770 Add Cookie Manager and links