v0.9.12

Changelog

• 3287525 add glamour
• ea34254 client: Explain explains code
• 11fd154 client: display err msg to the user
• a5b56cb client: explain returns read only ch
• 3445512 cmd/component: tell users how to exit viewport
• 05e83f6 cmd/explain: add explain
• 745b1a5 cmd/explain: update example
• 5a54178 display explanation
• 6fd3791 explain: adopt json object for server sent events
• a90e49a guest client can talk to explain
• 5bd2c91 viewport: convert
  to newlines