Riddler per Emoon

Riddler is a three-sided application (browser extension, website, Discord bot) for players and administrators of online riddle games. If you're here, you probably know how it goes.

== WARNING ==
This Firefox extension is experimental, and riddles requiring usernames/passwords (i.e credentials/auth boxes) won't work properly. For any of those, we recommend using a Chrome-like browser and its respective extension: https://chromewebstore.google.com/detail/riddler/pipfgmnooemfjelejnboacpkgodhbddh