Torchmaxflow

What's Changed
* [ENH] Add an optional connectivity argument for support of 8-connectedness in 2D and 18, 26-connectedness in 3D by turtleizzy in https://github.com/masadcv/torchmaxflow/pull/6
* Enhancements, including python headers and multiple connectivities support by masadcv in https://github.com/masadcv/torchmaxflow/pull/7

New Contributors
* turtleizzy made their first contribution in https://github.com/masadcv/torchmaxflow/pull/6

**Full Changelog**: https://github.com/masadcv/torchmaxflow/compare/v0.0.5...v0.0.7

What's Changed
* Change maxflow source to a one that is in-line with license by masadcv in https://github.com/masadcv/torchmaxflow/pull/3
* Pre-compiled binaries for multiple platforms

Removed Yuri Boykov and Vladimir Kolmogorov's maxflow implementation

Now using OpenCV v2.4's implementation of maxflow

Updated input checking mechanisms

Fixed issues with pypi
Refactored code