Add name of project at top of license
fix container_traits with respect to boost::property_tree: Fixes#554
fix as_table with a vector of tuples (forward_get ignored constness): Fixes#552
Adds a `protect()` function to trigger safety for an item.
This commit also optimizes away all instances of virtual function calls for function calls and storage. Will need to test speed to see how it works out.
Closes#133Closes#134Closes#135Closes#136