v0.2.3

Just need to comb through the code again before merging this and creating a new release

Changes

• 4d121ada Forward all non-Follow Undos
• e3bf4258 Add Nodeinfo 2.0 endpoint
• b87e5234 Add spec file for building an executable with pyinstaller
• d08bd662 Use signature keyid instead of object actor to fetch actor

Fixes

• c0d55ceb Use activity id for caching to prevent activities with already relayed objects from being ignored
• dcb7980c Prevent old unfollows from booting instances
• 8fd712c8 Always fetch nodeinfo software name to prevent exception in inbox
• ef5d4bc5 Only fetch commit hash if in running from git repo
• 6960c8d6 Return 400 error if "resource" is missing from webfinger query