Introduce Variable: Compare receivers (both implicit and explicit) when looking for expression occurrences
#KT-4819 Fixed
Extract Function: Implement validation
Extract Function: UI support for validation
Added `getOperationToken` method to JetUnaryExpression
Updated AbstractJetInspectionTest to use runtime if necessary
Modified IfThenToElvis to not apply when using '!!' would be better
Added methods to IfThenUtils
Added DoubleBangToIfThenIntention
Added IfThenToDoubleBangIntention
Generated tests
Buildserver auto merge