Add update check to the script

[firasdib]

Now that you're actively developing the script, it would be nice if it could check for a new version on startup, and notify us if there is one. That way I don't have to come and check the github page every so often :)

[auanasgheps]

That's a good one, but people might non like that the script "calls home" (GitHub), so I'll make sure it that can be disabled.

[tehniemer]

You can set up notifications in GitHub to be notified of new releases.

[firasdib]

@tehniemer That's a good idea! Didn't think of that. It would be nice to get a notification in discord/email about it, but I can see that this is an easier avenue.

I'll let @auanasgheps decide!

[auanasgheps]

I can easily add the notification in the script via email, will do it. Not everyone uses Github regularly.

[auanasgheps]

Implemented! I think I'm good for now, so we're close for a release!