ENH: GradientTable now calculates qvals when big and small delta are provided
ENH: Now PEP8
ENH: Now test actually tests what it should
Merge pull request #472 from demianw/gradient_table_qval_calc

ENH: GradientTable now calculates qvalues
TST: Make Travis provide verbose test outputs.
Merge pull request #473 from arokem/verbose-travis

TST: Make Travis provide verbose test outputs.
TEST: adding more tests to catch differen scipy versions
RF: switch travis tests to use virtualenvs

We were using a trick to get the dependencies on travis, working round
their virtualenv setup.

Now there is a usable travis wheel repository, we can use our own
virtualenvs and install all optional dependencies.
RF: refactor coverage in travis file

Coverage went wonky with virtualenvs
TST: add verbose flag to travis test output

Use standard nosetests, bug for setuptools we were working round was
fixed a while ago in nose.
Merge pull request #474 from matthew-brett/refactor-travising-2

RF: switch travis tests to use virtualenvs
Added more failsafes for old scipy versions
MAINT+TST: update minimum nibabel dependency

Add to travis testing to check in future.
Resolved conflicts
ENH: allow SLR to have input previous transformations
TEST: reduced number of iterations for faster execution time
Merge pull request #477 from matthew-brett/update-nibabel-dependency

MAINT+TST: update minimum nibabel dependency
TST: Increase the timeout on the Travis pip install

H/T to @ogrisel for suggesting this:
https://github.com/nipy/dipy/pull/474/files#r20766386
Merge pull request #478 from arokem/travis-time

TST: Increase the timeout on the Travis pip install

H/T to @ogrisel for suggesting this:
https://github.com/nipy/dipy/pull/474/files#r20766386
DOC: changed 0.12+ to >= 0.12