LSP4J feature request too low a version of xtend lib

[jonahgraham]

In the LSP4J feature SDK it says:

lsp4j/releng/lsp4j-feature/feature.xml

Line 35 in 5486d6f

<import plugin="org.eclipse.xtend.lib" version="2.10.0" match="compatible"/>

which is many versions older than what the bundles themselves require:

lsp4j/gradle/versions.gradle

Line 19 in 5486d6f

'xtend_lib': '2.40.0',

This may lead to some dependency problems, such as reported in #871 (comment)

[jonahgraham]

This has been wrong for a long time, I am unsure why it has recently been flagged as an issue.

However since in #937 we plan to remove the feature altogether then I don't plan to do anything on this issue until the migration to maven is done. (link to removed feature in PR)

[cdietrich]

Maybe we also want to have a runtime feature that does not ship the generator at all

[jonahgraham]

I would rather remove features entirely than add new ones.