Compatibility module providing Lua-5.3-style APIs for Lua 5.1
Description
This is a small module that aims to make it easier to write code in a Lua-5.3-style that is
compatible with Lua 5.1, Lua 5.2, and Lua 5.3. This does not make Lua 5.2 (or even Lua 5.1)
entirely compatible with Lua 5.3, but it brings the API closer to that of Lua 5.3.
