---------------------- - Add support for Tornado < 6
2.1.0
---------------------- - Add sampling rate for batch submission
2.0.0
---------------------- - Change the way the buffered submission of measurements is handled
1.4.0
---------------------- - Make the hostname tag optional
1.3.0
---------------------- - Add a flag to disable submission - Add more environment variables for configuration - Add a maximum buffer size that discards metrics when there are too many - Remove correlation-id fields
1.2.0
---------------------- - Make the timestamp for a measurement something that can be overridden