switchboard 2.2.1

What's Changed

• identity: the agent id no longer moves when the branch does by @gald33 in #226
• Session capsules: keep the subagents, and let a browser collect one by @gald33 in #227
• Release 2.2.1 by @gald33 in #228
• Register a handed-off session with the desktop app by @gald33 in #229

Full Changelog: v2.2.0...v2.2.1