Cxrandomwalk

What's Changed
* Added `walkHits` method to get only the number of hits for the randomwalks
* Update version number and Python requirement by filipinascimento in https://github.com/filipinascimento/cxrandomwalk/pull/4


**Full Changelog**: https://github.com/filipinascimento/cxrandomwalk/compare/v0.4.0...v0.5.0

You can now generate walks for just a set of nodes.

v.0.3.0
New version with windows support!

Fixed memory leak with labels method.

Added support to use a labels list to export sequences.

- Windows not supported