combine close turns to one message

[Martin Kolman]

• combine turns if they are close together (credit: Skykooler)
  • example:

    "Turn left on Elm Street, then turn right on Main Street"
    "Turn left on Elm Street, then turn right"
    

• the second varaint might be only available once routing metadata is available

• make this configurable
  • turning off
  • setting of combination distance
    • based on reached distance or separate ?
  • maximum number of messages to combine
    • can espeak compute how long a pronunciation would take ?
  • some formating settings ?
    • like:

      "Turn left on Elm Street, then turn right"
      vs
      "Turn left on Elm Street, then in 10 meters turn right"
      

• other parameters that show up during implementation