Closures WIP 5 - testing operand visitor (task #45)
Closures WIP 6 - replacing plain lists of statements with StatementBlock objects (task #45)
Closures WIP 7 - adding IScopedOperand to locals, arguments, and 'this' (task #45)
Closure WIP 8 - implemented ExternalOperandVisitor; not yet fully tested (task #45)