Aio-snowplow-tracker

--------------------------
Added custom context vendor configuration option (67)
Changed the return value of the tracking methods to a tuple (65)
Added coveralls code coverage button (64)
Added currency parameter to ecommerce tracking methods (62)
Added config option to disable contracts (61)
Added event_vendor as argument to track_unstruct_event (54)
Added classifiers to setup.py (48)
Added support for custom context to all track() methods (38)
Updated Tracker constructor to use map of optional args (37)
Updated so a transaction and its items have the same txnid and dtm (25)
Added support for Python 3.2 (41)

--------------------------
Fixed Pycontracts dependency (63)
Made unrequired tracker method arguments optional (40)
Linked the Technical Docs and Setup Guide images to the appropriate pages (60)
Changed API to no longer specify a collector URL option (57)
Removed the "URL from Cloudfront subdomain" option (56)
Started sending event vendor parameter through on querystring (55)
Changed track screen view to use an unstructured event (53)
Added ability to name individual instances of the Python Tracker (52)
Validated GET payload in all integration tests (33)
Added support for Python 2.7 (42)
Fixed versions in requirements.txt (47)
Added platform and tracker version to payload (50)
Changed tracker version prefix from "python-" to "py-" (51)

--------------------------
Initial release