v0.4.2

Fixed

• The bottom of the last row of cameras is no longer cut off. The sheet is now
  measured against the box the window frame actually gave it rather than the
  whole window surface, which is a little larger wherever the frame keeps its
  shadow and its border inside the window. Before, the last row of captions was
  clipped by the bottom of the window, and every unit was squeezed a little
  narrower than the picture drawn in it.
• One camera drawn alone is measured the same way, so its picture and its
  caption fit the window instead of running past the bottom of it.
• Enlarging a camera now really shows the stream it is enlarged for. The
  enlarged view was asking for the wall's picture, so the sharp stream the
  camera had been connected for was never the one on screen.

Changed

• A camera's full-resolution connection is no longer held for the rest of the
  session after the first look. Going back to the wall switches the picture to
  the low-resolution stream at once and gives the second connection back after
  30 seconds. Looking at the same camera again within those 30 seconds still
  costs nothing, and a wall left open no longer keeps sessions that the camera
  may want for something else. If you are listening to a camera when its second
  connection goes, the sound moves to the stream the wall draws.