remove unnecessary package qualification
need junit to run spock
test support for Unirest
remove unused import
todo updates
tidy up compatibility tests
deal with fallout from HttpClient upgrade
upgrade snakeyaml
#104 remove commons-lang dependency
back to working version of HttpClient
Revert "back to working version of HttpClient"

This reverts commit 507c45dc18e6ae13e58ffc67fe6a6f086348b5fb.
use HttpUrlConnection for everything as RESTClient is causing issues with HTTPS