e444-26.7

• New extension for ech.u, rewritten in Kotlin
• Thread lists load again: every one of them used to fail with "Invalid server response"
• Boards, catalog, threads, posting, deleting, reporting and the slide captcha all work
• Reachable through ech.bz and ech.ist as well as the Web3 name
• Post polls, reactions and the per-post menu are not included