http proxy now counts HTTP bytes written
Send Tor NEWNYM signal between experiments
http proxy now sends unique id to remote server and local client
Added timings datastore to fileserver
Moved fileserver initialisation to ExperimentRunner
bugfix - missed a rename on _datastore
Add fileserver timings to results
changed DATAPERC to be nested to match spec
added more experiment specific result data for static files
add "source" to server config
add tor_version and socks_port to proxy/tor timings
added final bits to results to match spec format