Julia brings --experimental flag to enable --trim option for compiling Julia sources into smaller binaries.

In its current form, the Julia script doesn't handle this new option and you have to manually add --experimental key in `cmd()` call. A PR is waiting to fix it.

https://github.com/JuliaLang/julia/commit/c5899c2d54f88c66b3596639b6befb7400a68016