Lunar C++ wrapper template

Lunar allows to wrap C++ classes for use in Lua by automating large parts of the code creation through templates.

Special methods

Lunar handles con- and destruction through several special methods (of which only T(L) and ~T() are required).

Function	When	Available data
`T(L)`	upon construction	Lua state (C++ object)
`oninit(L)`	upon calling `new()` in Lua, after calling the constructor	Lua state (Lua and C++ object)
`onpush(L)`	on pushing objects into Lua from C++ and when calling `new()` in Lua	Lua state (Lua and C++ object)
`ongc(L)`	upon garbage collection, before calling the destructor	Lua state (Lua and C++ object)
`~T()`	code that needs just the C object	just C++ object