Removed http cache as it is redundant
Merge pull request #8 from pkruithof/remove-http-cache

Removed http cache as it is redundant
added download_progress event to http transport
Merge pull request #9 from fieg/http-progress-event

added download_progress event to http transport
fixed download_progress event on http transport
renamed var
added ProgressAwareInterface
Merge pull request #10 from fieg/http-progress-event

fixed download_progress event on http transport