Patch Tester 3.0.0 Release Candidate

This release runs only on Joomla 3.

Fixes/improvements since last release:

• [#215] - allow login github credential with '#'
• [#216] - Change Table Options to Filter Options
• [#220] - Add PostgreSQL (PDO) driver.
• [#221] - Correct 2.0.0 schema updates
• [#225] - Update deprecated license
• [#226] - Update README.md
• [#252] - Correct implode argument order
• [Commit 029a8f1] - Adjust regexes to support 3.10
• [Commit 3ad49d7] - Remove Hathor overrides
• [Commit 6ae47e8] - Require 3.9
• [Commit fadbf7a] - Namespace everything
• [Commit 444498a] - Sync languages
• [Commit 73f0781] Remove atum template

All changes since the previous release can be viewed here