[polari] (6 commits) Non-fast-forward update to branch wip/fmuellner/window-experiments

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/fmuellner/window-experiments' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  841ff68... roomList: Use Map to keep track of rows/placeholders
  fd35691... roomList: Pick up list of existing rooms
  9bcfa1c... roomStack: Store rooms in a Map
  ab4aa82... roomStack: Pick up list of existing rooms
  a7afd79... app: Implement 'new-window' action
  6cec677... mainWindow: Add a convenience :active-room-id property

Commits added to the branch:

  28f56eb... roomList: Use Map to keep track of rows/placeholders
  f1c49e6... roomList: Pick up list of existing rooms
  c19a8c3... roomStack: Store rooms in a Map
  1c6d24d... roomStack: Pick up list of existing rooms
  bb6f0ee... app: Implement 'new-window' action
  6d20794... mainWindow: Add a convenience :active-room-id property