Updated api_changed_list.md with PHP plugin changes (#59)
Updated api_changed_list.md with PHP plugin changes (#59)

com.jetbrains.php.lang.psi.elements.Function.getReturnType() Binary compatibility issue - changed return type to new PhpReturType
JetBrains/intellij-sdk-docs,JetBrains/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,JetBrains/intellij-sdk-docs