Labellib

This minor release that improves LabelLib by addressing the following issues.

* Function that calculates for a given Grid3D a list of cartesian points (https://github.com/Fluorescence-Tools/LabelLib/issues/10)

Addressed issues

* Added Documentation and examples (https://github.com/Fluorescence-Tools/LabelLib/issues/1)
* Fixed compile issues on macOS (https://github.com/Fluorescence-Tools/LabelLib/issues/2)
* Tested using Continuous integration (https://github.com/Fluorescence-Tools/LabelLib/issues/3)
* Fixed build issues (https://github.com/Fluorescence-Tools/LabelLib/issues/5)
* Fixed naming version issues in pypi (https://github.com/Fluorescence-Tools/LabelLib/issues/6)
* Switch from LGPL to less copyleft MP (https://github.com/Fluorescence-Tools/LabelLib/issues/7)