Release 1.4.0

This release does not change the user interface or functionality, but this is more than a patch release because it changes the minimum required versions of many Python packages and uses newer Google API libraries.

• Fixed compatibility between Handprint and more recent versions of the Google API libraries. The previous versions of the Google API are no longer supported by Handprint.
• Fixed a bug in the main routine causing an error when trying to print exceptions.
• Fixed a bug in catching errors in the Microsoft interface.
• Update requirements.txt to remove no-longer used packages and update minimum version numbers.
• Update README.md to acknowledge the Python dependencies actually being used now.

The file CHANGES contains a more complete change log, and includes information about previous releases.