Depend on latest stable HTTP_Request2, not 3+ year old alpha
Add a base class for HttpGetTask and HttpRequestTask. Don't parse 'proxy' in HttpGetTask, pass it to HTTP_Request2 (this is why 2.1.0+ is required)
Extracted createRequest() and processResponse() methods from main(). Allow setting prototype request (for tests).
Basic test suite for httpget / http-request