https://github.com/gdassori/pybitcointools/tarball/spruned-support#egg=pybitcointools-1.0.0a1
https://github.com/gdassori/connectrum/tarball/spruned-support#egg=connectrum-0.5.3a4
https://github.com/gdassori/pycoinnet/tarball/spruned-support#egg=pycoinnet-0.19a3
https://github.com/gdassori/pycoin/tarball/spruned-support#egg=pycoin-0.90a4
