v0.9.0

Added

• Floating groups snap while they are dragged: flush to the main console
  area's edges, and to the other floats' edges both ways round - lined up in a
  column, or sitting side by side and stacked. The right-hand edge stops short
  of the console's scrollbar, so a snapped float never covers it. The distance
  is mdw.config.floatSnapDistance (8); 0 restores pixel dragging. Each axis
  snaps on its own, so a float can catch the top edge and stay free sideways.
• mdw.mainArea() returns the main console area as x, y, width, height - the
  rectangle mdw.floatPos and the snapping both measure against.
• mdw.restoreMainFont() hands the main console back to the family MDW
  captured before it applied the game's own, falling back to Mudlet's bundled
  monospace if that family has gone too. A package that BUNDLES the font MDW
  renders in should call it from its sysUninstallPackage handler: Mudlet
  unloads a package's fonts while uninstalling it and then warns the player
  that the profile's font is missing, and that check runs after the handler.
  MDW's own full uninstall now uses the same function.

Fixed

• A floating group came back at the default corner after a package update
  instead of where the player left it. saveLayout has always recorded a
  float's x/y, but rebuildStacksFromLayout restored a group's dock, row,
  size and active tab and never those - and for a float the position IS the
  whole placement.