* Create a configuration directory to store the user's local levels
and doodads. On Linux this is at ~/.config/doodle
* Unify the file loading and saving functions: you can type into the
console "edit example" and it will open `example.level` from your
levels folder or else `example.doodad` from the doodads folder, in the
appropriate mode.
* You can further specify the file extension: `edit example.doodad` and
it will load it from the doodads folder only.
* Any slash characters in a file name are taken literally as a relative
or absolute path.
* The UI Save/Load buttons now share the same code path as the console
commands, so the `save` command always saves as a Doodad when the
EditorScene is in Doodad Mode.
