v1.7.0

Added

• Add new /openDevContainer path, similar to the /open path, except this
  allows connecting to a dev container inside a workspace. For now, the dev
  container must already be running for this to work.

Fixed

• When not using token authentication, avoid setting undefined for the token
  header, as Node will throw an error when headers are undefined. Now, we will
  not set any header at all.