LSP4J 0.12.0

LSP4J 0.12.0 has now been released and been contributed to simrel, tagged and uploaded to maven central.

• Simrel contribution
• maven search
• maven url
• p2 site (zipped)
• git tag

Changelog entry:

• Restored org.eclipse.lsp4j.websocket which will be included along with org.eclipse.lsp4j.websocket.jakarta. This will allow use of LSP4J over Jakarta websockets and pre-Jakarta websockets. See #536 for more details.

Fixed issues: https://github.com/eclipse/lsp4j/milestone/19?closed=1

Breaking API changes:

• Type of CodeLensOptions.resolveProvider changed from boolean to Boolean

Breaking changes in behavior:

• In case a type argument for Either is declared as Object,
  EitherTypeAdapter now uses JsonElementTypeAdapter for parsing/serializing
  the corresponding value. Notably, this can affect parsing of properties
  SemanticTokensClientCapabilitiesRequests.range and SemanticTokensWithRegistrationOptions.range;
  their right-hand side, declared as Object, will be parsed into a JsonElement now.