Revision history for GraphQL-Client.

0.602     2020-03-17 18:27:46-06:00 MST7MDT
  * Add support for GRAPHQL_CLIENT_OPTIONS environment variable.
  * Fix a slew of CLI option problems.

0.601     2020-03-15 20:38:38-06:00 MST7MDT
  * Rename "class" attribute to "transport_class".

0.600     2020-03-15 18:08:57-06:00 MST7MDT
  * Initial public release.

