MPS-21039 LinkageError during language runtime instantiation breaks ConceptDescendantsCache
MPS-21037 Unable to close MPS
MPS-21076 Error thrown by a plugin during initialisation ruins MPS
MPS-20846 Editor of class com.intellij.openapi.editor.impl.EditorImpl hasn't been released. The previous changes must have fixed another possible cause -- the LinkageError while reloading plugins
Regenerating after rebase
Restructured code in the LanguageRegistry, execution flow is not changed
Class Loading changes: no double reload is possible
Reviewing the #reloadModules usages in the MPS project
MPS-21083 No balloon or message in the events log when throwing exception during app loading
Generating mps.ide.build (added some missing imports earlier)