v2.9.0-alpha

Pre-release of a (relatively large) upcoming change to use discord.js v12! There were a lot of breaking changes in the upstream library, including removal of support for Node <12, which is what prompts me to make this into a pre-release rather than storming ahead to release it directly. If nobody reports bugs on this soon, and I don't spot any, I'll promote this into a full release!

Please do test this out, if you're happy to risk breakages and report these bugs to me!

Changed

• Upgraded discord.js to 12.2.0, which changes a lot of how the bot works behind the scenes, and starts preparing us for upcoming Discord API changes - #555
• Added support for Node 14 (#549); dropped support for Node 6, 8 and 10 (#550).

Fixed

• A bunch of vulnerabilities listed in npm audit are now gone - #544, #548, #551, #552, #553
• Log messages now typically take up one line again (fixing a relatively long-standing bug, at this point – oops!) - #554