Remove unused function
Remove comment which no longer applies
Unexport function only used internally
Update for Nova_ShowPromises prototype change
Constify EvalContext in FatalError, VariableGet and friends
Remove useless ExpandPrivateScalar, just use ExpandScalar, it does the same thing
Remove broken unit test for removed CopyAssoc
Signature change updates for stubs in unit tests
Add STACK_FRAME_TYPE_PROMISE_ITERATION
ifelse() function