Support lua or MicroPython as a scripting language?

I have nothing against Javascript/Spidermonkey; but personally, I have found Lua to be a better solution for embedding scripts within my applications. Probably not a surprise, as that's exactly the use it was designed for.

In the same 'minimal footprint' vein, MicroPython is worth considering instead, if you consider Lua to be a niche language.

Just another software developer's two cents :)