* Feature/travis ci to GitHub actions (#282)
* Updates Composer/NPM Dependencies & Adds New GitHub Actions
* Moves All CI/CI Functionality to GitHub Actions
- Updates Composer & NPM dependencies to newer versions.
- Updates default development environment WordPress version to 5.6.x.
- Fixes missing updated to the language POT file.
- Moves to using a GitHub Release for WordPress.org deployment.
- Removes TravisCI configuration.
* Fixes Login Page XSS Issue (#283)
- Adds escaping to the errot output message.
- Adds escaping to the login button output.
* Patch Version Bump & Changelog Updates for Release
- Fixes an issue with post password submission results in SSO
authentication when "auto" mode is enabled.
- Fixes issues with TravisCI builds failing due to Composer updates
occurring incorrectly during builds.
- Fixes to allow for WP version changes according to build matrix.
- Updates TravisCI build matrix.
- Reads from defined constants on plugin bootstrap.
- Disabled plugin settings fields when defined constants are used.
_ Prevents savings plugin settings that are using defined constants.
Tim Nolte