Make asi gevent aware
buildout.cfg: adding infi.pyutils to requirements
STORAGEMODEL-214 gevent friendly
STORAGEMODEL-214 added tests
Finished release v0.3.8.

* release/v0.3.8:
  STORAGEMODEL-214 added tests
  STORAGEMODEL-214 gevent friendly
  buildout.cfg: adding infi.pyutils to requirements
  Make asi gevent aware