Changes:
* Fixes for UTF-8 encoding of CSV output
* Ensure the UTC ISO8601 date includes a Z offset
* Fix calculation of uploads to perform per size
* Pre-allocate upload data, but allow to disable pre-allocation, for memory limited devices
* Support using --csv-delimiter with --csv-header
* Redesigned Python API
* Add option to exclude servers, and allow --server and --exclude to be specified multiple times
* Address Exception issues
* Print errors to stderr
* Remove deprecated speedtest_cli.py
* Handle malformed XML responses
* Ensure --share works with --csv
* Fix SSL communication during latency tests on python 2.6 and older
* Handle error where latitude and longitude from config are invalid
* Ensure we are utilizing the context created by HTTPSConnection, or falling back to ssl.
* Automatically resolve .best property
* Pass Content-Length header with POST requests
* Fix install instructions with git clone
* Add functionality for single threaded testing
* Add debug support to show if a URL request resulted in a redirect
* Add the python version to the version output
* Switch from platform.system to platform.platform when building the User-Agent header
* Don't pass server_hostname to ssl.wrap_socket
* ensure ERROR doesn't print an empty string
* Fix SSL support on Python2.4 and Python2.5
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