Vamooses SlipStream

### Flight paths
- Routes fly only between flight paths you've found. Open any flight
  master's map once on each continent and Slipstream learns which ones you
  have there, and remembers them for that character. Until you do, routes on
  that continent go on foot, and pressing GO tells you so in chat

### Routes
- The portal between Dalaran's Sky Enclave and Stormwind is offered only to
  Skyborne characters, the only ones it takes

### Step list
- The steps in Slipstream's window are drawn as the route HUD draws them: a
  walker for a walk, a badge with the boat, flight master's boot or portal,
  the destination's pin, and the way you travel between each. The step you're
  on is ringed and brightest (the first one, before you press GO), and every
  step ahead reads in full, times and all. Walks are no longer dimmed below
  the rides

### Map
- While you navigate, your route shows on the game's own world map too, on
  zone and continent maps: the roads you'll walk, a ring at each change, your
  destination, and the time and distance of each walk ahead. Turn it off in
  Settings: "Route on the world map"
- The route on the map window starts where you stand: the walk to your
  first step is drawn too. It used to begin at the first step's end, such
  as Orgrimmar's west gate
- The map on the step list no longer goes blank for a few steps at some zone
  edges, such as just outside Orgrimmar's west gate, where the game briefly
  places you on the continent instead of the zone