fix endless loop that keeps calling os.dirname("/") == "/" in case it couldn't find mix.exs
add use_root_dir setting: if set to true, always use project root dir, don't preform mix.exs lookup
improve project root dir detection - in case when there are several root dirs, pick one that shares prefix with current file
fix endless loop that keeps calling
os.dirname("/") == "/"
in case it couldn't find mix.exs add use_root_dir setting: if set to true, always use project root dir, don't preform mix.exs lookup improve project root dir detection - in case when there are several root dirs, pick one that shares prefix with current file