sdss_access 2.0.0

This release is a major release as it introduces a breaking change of switching to use the new SDSS dtn server.

• Breaking Change: switches sdss_access to use new SDSS dtn.sdss.org server
• Feature: adds new "data.sdss5.org" server to support rsync, curl, and http downloads for sdss5 products
• Adding new Sphinx docs for SDSS collaboration authentication
• Updates the public release check to now check todays date against the tree release date, and "DR" in release name.

What's Changed

• Fixes tests to run on Github Actions by @havok2063 in #28
• Dtn by @joelbrownstein in #27

Full Changelog: 1.1.1...2.0.0