Added
+) `.random` for `DStyle`
+) `.random()` for `DColor`
Neutral changes
•) minor back-end clean-up and fixes
•) `PIL` (Pillow package) is no longer used to save an image so users don't have to get Pillow as a requirement just for this
•) when saving images with the same name, they will now get a number added at the end instead of overwriting an existing image