sessionpipe-gui v0.3.2

Fixed

• The desktop app opens on the receiver it finds. 0.3.1 found a receiver already
  running on this Mac and selected it, but kept the window it had opened with none, so the
  board stayed on its first frame for good. Selecting a receiver now rebuilds any window
  that doesn't show it; the same fix covers the welcome's Start sessionpipe and Connect.
• The board and the inbox never sit on loading rows without saying why: after a few
  seconds they say they're still connecting, or that the connection is down, with Retry
  now. A stream that opens but never sends its first update is opened again.
• The desktop app gives up on a receiver that accepts the connection and never answers
  (20 s), and writes dropped streams and failed requests to its log (no keys, no queries).