RFR: 8316135: Create release notes for JavaFX 21 [v4]

Sat Sep 16 13:54:43 UTC 2023

On Sat, 16 Sep 2023 13:48:17 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Release notes for JavaFX 21, including four important changes, and the list of enhancements and bugs fixed in this release.
>> 
>> I plan to integrate this on Monday, Sep 18th, and backport it to `jfx21` in time for Tuesday's release of JavaFX 21.
>
> Kevin Rushforth has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix typo: TreeColumnBase --> TableColumnBase

Marked as reviewed by jhendrikx (Committer).

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PR Review: https://git.openjdk.org/jfx/pull/1239#pullrequestreview-1629965383