LuaVlerq 1.7.0

Released - although that is an exaggeration, it's more like a 0.7 release, really, i.e. pre-alpha. Just so you can see where it stands.

This is Lua-only, since Lua is now tightly integrated into Vlerq (or is the other way around?). The intention is to later add thin language wrappers for additional language bindings.

I'm pleased with the 1.7.0 code. Despite its immature status, it's small and its snappy - both are essential starting conditions for me.