New files save in first project

[LongLiveCHIEF]

Whenever you use :e filename.ext, from any "project" to create a new file, upon save, it saves in the first project open in the file explorer, instead of the most recently active.

[hultberg]

I suspect this is because we pretty much always select the first project path: https://github.com/lloeki/ex-mode/blob/master/lib/ex.coffee#L56

Added label bug and I'll have a look.