v3.0.1

Added

• Add getjson() function to allow plugins to use valid json strings are configuration
  options (@ytreister, #144)

Changed

• Fix stoq command line to properly parsed --plugin-opts and --request-source
  arguments that contain = or : characters
• Ensure always_dispatch in stoq.cfg leverages getlist() when Stoq() is
  is instantiated. (#149)
• Multiple fixes and updates to Dockerfile