all fixes and improvements in detail
- (Spring Boot) [backport] language server throws NumberFormatException #1696
- (Spring Boot) [backport] NullPointerException: Cannot invoke "org.eclipse.core.resources.IResourceDelta.getResource()" because "resourceDelta" is null #1695
- (Spring Boot) [backport] YAML editor barfs on sequences #1694
- (Spring Boot) [backport] reading support ranges from spring.io API throws exception #1693