MCE Table Buttons

Note that this release replaces references of master with trunk so please plan to update any references you have from master to trunk to ensure you continue to receive the latest updates on this plugin.

• Changed: Bump WordPress version tested up to 5.8 (props David Chabbi, @jeffpaul, @ciprianimike).
• Changed: Updated documentation including new GitHub Actions (props @jeffpaul, @dinhtungdu).
• Fixed: Issues reported by PHPCS WPCS v2.3.0 (props @ciprianimike, @dinhtungdu).

• Significantly update TinyMCE plugin from 4.1.x to 4.7.11
• Drop support for WordPress 3.x, which means dropping TinyMCE 3.x and 4.0.x

• WordPress 4.0 support, including a much newer TinyMCE plugin, with many new features, including background color and horizontal alignment
• Dramatically improved support for paragraphed content inside of a cell (paragraph breaks no longer disappear on save)

• Updated core TinyMCE table plugin from 4.0.20 to 4.0.21 in sync with WordPress - mostly bug and accessibility fixes
• Refactored for compatibility with plugins like Advanced Custom Fields that do not use the_editor hook

• Support for WordPress 3.9 and newer, which includes a major visual editor upgrade (TinyMCE 4)

• New button icons that better conform with WordPress's editor design
• Retina (HiDPI) ready button icons!
• Upgraded to latest version of TinyMCE tables plugin (fixes a lot of edge case bugs)
• Rewrote code for hiding / display toolbar with kitchen sink (now a TinyMCE plug-in instead of a workaround) - the table buttons no longer briefly appear before page loading is finished

• Table toolbar is hidden or displayed along with the kitchen sink (yay!)
• Minor clean up to code base and files; optimized for WordPress 3.3

• Updated TinyMCE table plug-in to corresponding TinyMCE update in WordPress 3.1 (still supports <3.1 too)

• Updated support / developer information

• Code clean up, 3.1 testing

• Fixed editor save warning appearing for unchanged content when the table is at the bottom of the editor
• Minor code clean up