Updated python to 3.6 - added feature: alkane molecular formula calculator - added alkane debugging
Updated python to 3.6
- added feature: alkane molecular formula calculator
- added alkane debugging

JingjieYang/CHEMaths,3D-Circle/CHEMaths,JingjieYang/CHEMaths,3D-Circle/CHEMaths,JingjieYang/CHEMaths,3D-Circle/CHEMaths