V0.4.0 - Beta

This is the next relatively large release of Picsur.

The highlights are:

• Add an ARM64 docker image, so all you synology and rpi fans can now finally use it too!
• Add the ability to export a ShareX config right from the settings
• Add expiring images

And some other neat additions:

• Save image filenames as image title
• Allow editing of image titles
• Add support for api keys
• Improved branding
• Smaller docker image ~2GB -> ~300MB