RoosterJs 8.20.0

Improvement

• Table improvements: support merging multiple cells (#880)
• Allow customization of TableResize helper elements (#909)
• When paste from Word, remove comments (#912)

Bug fix

• Fix the bug that focus can be lost after copy (#893)
• Fix some runtime errors (#897, #905)
• Check if the TabKeyFeatures before modifying the ListPosition to be inside (#899, #900)
• Fix copy/paste issue in IE (#908)
• Fix an issue when set content with Colgroup (#872, #916)

Engineering improvement

• Use "enum" instead of "const enum" by default to be compatible with "isolatedModule" mode. This will increase bundle size. To keep a smaller bundle size, we publish "@size-optimized" version to keep using "const enum" (#911)
• Finished the strict mode improvement for roosterjs-editor-dom package (#883, #892)
• Prepare strict mode for roosterjs-editor-core package (#902)

Interface change

• Replace "const enum" with "enum" for @latest version, but keep them in @size-optimized version
• New enum TableOperation member:
  • MergeCells: Merge all selected cells
• New parameter of TableResize constructor:
  • Parameter onShowHelperElement: An optional callback to allow customize helper element of table resizing