Platform: do not prevent project files from being written (IDEA-123489, IDEA-123899)
WEB-11278 Bad performance expanding emmet
Platform: duplication spotted
IDEA-123803 Popup goes behind its parent dialog for multyline editor
Cleanup (JAR FS test moved to the flock)
IDEA-123886 (postpone .jar file type check until root creation)
new inference: optimization
new inference: remember mentioned constraints in set optimization
restore cashed argument types, not for overload resolution