Version 1.2

Major

• Added support for metatables
• Fixed bug with ref and const-ref callback parameters
• Fixed exceptions not being thrown by writeVariable with Lua 5.2
• Fixed exception-safety when callbacks throw exceptions

Minor

• Changed LuaEmptyArray to LuaContext::EmptyArray and LuaMetatable to LuaContext::Metatable (former definitions are working but deprecated)
• Fixed custom object being copied instead of moved when being returned by a callback
• Fixed bug when reading arrays from boost::variant