Version 0.3.0 - Extension store release

I'm happy to announce you no longer have to come here (the Github releases page) to get the latest version of Joule! Thanks to some permission changes in this latest release, the app can now be updated in the stores with a somewhat less lengthy approval process. You can find it in the following stores:

• Chrome & Brave: https://chrome.google.com/webstore/detail/joule/aejmoogjdllanidlpfjmmmmimfaficio
• Firefox: https://addons.mozilla.org/en-US/firefox/addon/lightning-joule/
• Opera: Still "Coming Soon"™

Installing from a store will require you to re-configure your node, since it will erase your settings. Sorry about that!

Features / Improvements

• Reduced required permissions to the bare minimum, ask for permissions as needed (#84)
• Automatic scanning of port 8086 for the Lightning App (#91)
• Remove the prompt countdown for WebLN interactions and BOLT-11 links (#93)
• Added bars to channels to represent available capacity (#95)
• WebLN interaction prompts now direct you to onboarding if you haven't setup a node (#94)
• Onboarding flow for BTCPay Server (#92)

Fixes

• Fixed transaction dates displaying the month number, rather than the day number (#85)
• Fixed trailing slashes in node URLs causing connection errors (#86)
• Add a warning for Firefox CORS issue (#100)
  • This will need to be fixed in full at a later date, this is merely a triage of the existing issue
• Typo fixes (#74)

Special thanks to @PatrickLemke for the channel progress bars, @philippgille for typo fixes, and everyone who's been incredibly active in the issue queue.