Support for existing project#2

It will be better if it’s support for existing project, and show deprecated dependency as red .dot

Importing existing projects is supported. Go to File\Import existing project… or click import during new project creation wizard. Showing a red dot for outdated dependencies is a good idea - I’ll create an issue for it so we can discuss the details on Github.

OK, added an issue for the dependency status on Github. https://github.com/joshwcomeau/guppy/issues/389