v0.2.3

Release Notes

Changed

• Use aiohttp and aiofiles for more performant and robust handling of service calls
  and downloading of 3DEP map requests. This should limits the number of connections
  made to the dynamic 3DEP service to avoid hammering the service and can reduce the
  memory usage when downloading large files. As a results, aiohttp and aiofiles
  are now required dependencies and urllib3 is no longer needed.
• More robust handling of closing VRTPool at exit by creating a new class method
  called close. This method is called by the atexit module to ensure that the
  pools are closed when the program exits.