Similar improvements in JFX 19

[tobiasdiez]

There have been recently similar improvements to the core of JFX: openjdk/jfx@60c75b8

Todo:

• Point people to the new methods in the readme: EasyBind.map (similar to map but differs in handling of null) and EasyBind.mapObservable (similar to flatMap, but different handling of null)
• Keep compatibility due to conflicting name: done in Compatibility with jfx19 #68

[Siedlerchr]

Easiest way: Rename the methods to avoid ambiguity.
We can deprecate map and flatMap, I think.
I would keep the OptionalBinding as there is no equivalent.

[Siedlerchr]

For testing with javafx19, it's easiest way is to use the javafx plugin for gradle and set the version to '19-ea+10' https://mvnrepository.com/artifact/org.openjfx/javafx-base/19-ea+10

[tobiasdiez]

Renaming sounds like a good idea indeed.

[tobiasdiez]

@Siedlerchr the new snapshot should be compatible with jfx 19. Can you please test this with JabRef?

[Siedlerchr]

Will test later this evening.

[Siedlerchr]

I noticed there was one or Else method that Still clashed. Created a follow up pr