on readme, added small note re experimentation support
Merge branch 'experiment-support' into develop
Changed the default vectorization to sparse. Addresses issue 6
Merge branch 'i6-bullying-memory-usage' into develop
updated version number
updated changelog with notes for 0.1.5
added small section on documentation re sparse vs dense matrices
Merge branch 'release-0.1.5' into develop
Merge branch 'develop'