FIX: Python 3.x TravisCI build error
Merge pull request #21 from JDWarner/fix_travis2

FIX: Python 3.x TravisCI build error
FIX: Change range of lambda cut series not to overwrite support.
Merge pull request #23 from JDWarner/fix_lambda_cut_series

FIX: Change range of lambda cut series not to overwrite support.
FIX: Update to comply with new Travis build syntax.

Borrows features from scikit-image.
Merge pull request #24 from JDWarner/fix_travis_again

ENH/FIX: Overhaul Travis build
ENH: Increase coverage for defuzzify submodule; remove `vertex` function

`vertex` used `eval` which is dangerous and has compatibility issues
between Python major versions 2 and 3. Until this can be resolved
(potentially with sympy) and user(s) request it, the `vertex`
function is hereby removed.
FIX: Python 3.2 TravisCI timeout due to unnecessary section of build.
Merge pull request #26 from JDWarner/fix_travis_3

FIX: Python 3.2 TravisCI timeout due to unnecessary section of build.
Merge pull request #25 from JDWarner/cover_defuzz

ENH: Increase coverage for defuzzify submodule; remove `vertex` function
wanted to bring the local inline

emote-tracking branch 'upstream/master'
incorporating PR feedback
partial derivative for gbellmf added
Merge branch 'mf_partial_derivative' of https://github.com/twmeggs/scikit-fuzzy into mf_partial_derivative