update regex to support multiline in julia-console

[Pangoraw]

cc @adrhill

[adrhill]

Related issues: #282, #283

[adrhill]

@Pangoraw could you remind me how we tested this locally?

EDIT: GitHub linguist has a guide.

[Pangoraw]

You need nodejs and npm installed:

cd atom-language-julia
npm ci # install dependencies described in package-lock.json (instantiate in julia)
npm run test

[Pangoraw]

One think I am wondering is that maybe we should put the fix in the cson file and remove the json file since Github linguist seems to work fine with cson for now.

[pfitzseb]

Could also consider moving the source of truth into a template file like the actual julia grammar, but tbf it doesn't really make any sense except for consistency.