v4.2.0

• Show detailed error message in python bindings.
• Fix: Previously, the role field in the default profile template is not commented out and set to Boy.
  You might want to comment it out if you are already using the default profile template and haven't changed it.
• The role, style and style_degree fields are now commented out in the default profile template.
• Feature: Now you can use --no-rich-ssml flag to disable rich SSML features such as role, style and style_degree.
  This is useful if you are using an endpoint that does not support rich SSML features.
• Fix(Python bindings): Now the SpeechService constructor correctly takes an iterable instead of an iterator for headers keyword argument.
• Fix: Now aspeak correctly handles endpoint urls that contain query parameters.