[jfx16] RFR: 8262460: Create release notes for JavaFX 16 [v3]

[Johan Vos]

On Tue, 2 Mar 2021 19:18:33 GMT, Abhinay Agarwal <github.com+3197675+abhinayagarwal at openjdk.org> wrote:

>> doc-files/release-notes-16.md line 20:
>> 
>>> 18: [JDK-8176270](https://bugs.openjdk.java.net/browse/JDK-8176270)|Adding ChangeListener to TextField.selectedTextProperty causes StringOutOfBoundsException|controls
>>> 19: [JDK-8255415](https://bugs.openjdk.java.net/browse/JDK-8255415)|Nested calls to snap methods in Region give different results|graphics
>>> 20: [JDK-8246343](https://bugs.openjdk.java.net/browse/JDK-8246343)|Fix mistakes in FX API docs|other
>> 
>> This one is from an older version.
>
> All original issues are added to the Release Notes if an issue is a backport issue. It seems like there is backport issue against JDK-8246343 with fix version `openjfx16`.

There are some "backport" issues that are sort of forward ported but still have type backport. For example, issues fixed in 15.0.1 are "backported" to 16.

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PR: https://git.openjdk.java.net/jfx/pull/414