Merge pull request #302 from sriniker/master

Reordering feature for Butina clustering
allow the old version of boost when building python2 code
related to the fix for #9 and #298
use miniconda to build both python 2.7 and 3.4 bindings
include the java wrappers in the python 2.7 build
Merge pull request #305 from rvianello/travis-ci-ext

use miniconda to build both python 2.7 and 3.4 bindings
Fixes #294
fix a relative import
fix a stupid import typo
fix the simdivfilters problem with python3. This has now been tested on py3 and should, hopefully, not cause the travis build to fail