refactor migration component
use indent layout in type sequence<...>
refactor migration component
add method SModule.getUsedLanguageVersion(SLanguage)
refactor migration component
check whether all modules are migrated when migration is over
use SLanguage in MigrationScriptReference
MPS-20759 do not try to convert to SConcept when we are working with declaration node
use Language.getClassLoader()
Merge remote-tracking branch 'origin/master' into 3.2/mburyakov/smodel
MPS-20528 Optimize model imports seems to remove all imports