Extract Function: Simplify computation of return type by pseudocode instruction
Extract Function: Add header to parameter table
Extract Function: Make nameForRef extension property (so that it's not overriden by delegation and parameter rename works properly)
Implement light method equality based on the original declarations
 #KT-4350 Fixed
Find Usages: Add support of searching by reference in AbstractFindUsagesTest
Find Usages: Classify package usages
 #KT-4882 Fixed
Introduce Variable: Do not compare explicit receivers using ReceiverValue
 #KT-5319 Fixed