Enhancements
- Improve the error range for unterminated elements, and use 
relatedInformationto show the expected close tag placement. See #963. - Add setting 
xml.completion.autoCloseRemovesContentto prevent auto self-closing feature from deleting content. See #1009. - Change name of telemetry events to use 
.. See #1017. - Output the language server error stream during development. See #1019.
 - Update Guava to 30.1.1. See #1025
 - Update Xerces to 2.12.1. See #1013.
 
Bug Fixes
- Fix 
xml.validation.noGrammarsetting. See #1024. - Fix XML 1.1 support in the binary server. See #1027.
 - Fix revalidation commands in the binary server. See #1031.
 - Return 
nullwhen receiving a request on a document before it has been opened. See #957. - Update the binary configuration so that the server works with an LSP 3.15 client. See #1022.