add julia

[wangyenshu]

github.com/Keno/julia-wasm

But the problem is that julia-wasm is 64bit wasm.

[anutosh491]

But the problem is that julia-wasm is 64bit wasm.

Just guessing it can be patched for 32 bit ?

[DerThorsten]

when making the next emscripten version update, we should consider to add 32bit and 64bit variants.
But this might take a while.

[wangyenshu]

Another potential difficulties with julia is that the precompilation step uses too much memory. For some packages, it can go up to 6GB. But most browser only offer 4GB for WebAssembly. I don't know if precompiling on host machine then loading the precompiled code to the virtual filesystem works or not.