fix MPS-18493 preference component language generator problem
make required
MPS-18571 : Exception after deleting language structure
node.getConcept is always null
add temporary check
MPS-18572 [build:IC-999.SNAPSHOT] <null> : Argument 1 for @NotNull parameter of org/jetbrains/mps/openapi/model/SNodeUtil.isInstanceOf must not be null
MPS-18571 : Exception after deleting language structure
Fix MPS-18555 [build:IC-129.713] <null> : Taking target node of dynamic reference whose source node is not in a model
Was: exception on undo of paste from java
Fix MPS-17914 [build:IC-129.451] Project is already disposed: Project (Disposed) psiProject
Fix MPS-18017 Idea read access violation in MPSReferenceSearch
Inserted comment link to a bug
MPS-18580 New strange behavior in cursor positioning
Merge remote-tracking branch 'origin/MPS3.0'