(boring - add env)

Ignore-this: 888401ec5e547e994832725bf6e7458

darcs-hash:20130921020928-3a4db-5f7243f584167865f7fc4123d97c35ff3f95a93d
(travis - possible minor improvements)

Ignore-this: 684d7c729e9e3f9eb25c995899cbc910

darcs-hash:20130921020954-3a4db-cd67829b68803eb10aad8aa366af8aab6f653c19
(core_fast - be explicit about what is from import numpy versus cimport numpy)

Ignore-this: 5e2a5e69f9f6fdab1e363ebb96080cf8

darcs-hash:20130921021644-3a4db-39199b925cf63cc4524bb0572a18d6b960ddcf4e
(core_fast - keep compiler slightly happier)

Ignore-this: c7b7d699a8e75df775f176f9e5245405

darcs-hash:20130921024247-3a4db-1a00b5e04c8a4811974721ddda18fe7fb92e92ab
(travis - make apt-get less verbose)

Ignore-this: 40709c67815d6119db1d5fe015fdd6b5

darcs-hash:20130921031749-3a4db-b183b0f2cc46ee1af0c71d00cd99547c7e9a550e