Breaking Changes in Lemmy 1.0

[Nutomic]

Use this issue to list all breaking changes in version 1.0 which are not already mentioned in this blog post. Will update this with more items.

• Rename timestamp fields to _at (eg published -> published_at)
• Make reason mandatory for mod actions
• Rename modlog items
• New modlog items:
  • AdminBlockInstance
  • AdminAllowInstance
  • ModChangeCommunityVisibility
  • ModLockComment
• Convert enum variants from PascalCase to snake_case
• More: https://github.com/LemmyNet/lemmy-ui/milestone/5