Merge pull request walterschell#12 from walterschell/feature/5.4.3

Upgrade to Lua v5.4.3

Merge pull request walterschell#11 from walterschell/feature/CXX

Feature/cxx

Merge pull request walterschell#7 from walterschell/issue/4-windows-b…

…uild

Issue/4 windows build

Merge pull request walterschell#1 from on-three/emscripten

Added emscripten support for web builds