MPS-17387 [build:IC-999.SNAPSHOT] java.lang.IllegalArgumentException : Argument 0 for @NotNull parameter of jetbrains/mps/smodel/SModelStereotype.isUserModel must not be null: Argument 0 for @NotNull parameter of jetbrains/mps/smodel/SModelStereotype.isUserModel must not be null
Removing StyleClassItem.getStyleAttribute() method - it works only for boolean attributes now.
repackaging StyleClassItem generator
removing unnecessary migration script
reverting change with getExpectedReturnType() in QueryFunctions
Merge remote-tracking branch 'origin/master' into multipleEditors