Merge branch 'master' of https://github.com/ylongqi/openrec

update setup version

Merge pull request ylongqi#33 from Yuan-T-Xuan/master

add PointwiseMLPCE in __init__.py, otherwise it won't be accessible

Enable reusability of samplers

Update version for pip

New version

updated version

Stability improvements.

Stability improvements

Fixing few minor bugs for Python3 support.