added variadic_results, to return a variable number of arguments to Lua
added variadic_results and as_results
added improved function examples (for multiple results and split overloading out)
added tests for variadics
added tests for C++17 utilities
added a forwarding header
added a specific `unsafe_function` header
added and improved documetation pages
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
usertype now respects factory functions and does not make default constructors/destructors unless the compiler says its okay
new and __gc functions can be overridden for usertypes to provide handle-like creation and deletion functions
Overloading match fixes
RAII improvements for all usertypes
Added tests to make sure these features stay