* New features:
* Added gridlink option in GridProperty import, 329
* More keyword options in Grid get_ijk_from_points() 327
* Well method report_zone_mismatch() rewritten and improved
* Well: added get_surface_picks()
* Initialise a new GridProperty instance from existing GridProperty
* Grid(): added name as attribute 319
* Bug fixes:
* The gridproperty list in GridProperty() is now unique
* Fixed bug in Well: get_zonation_points
* More fixes on pathlib (general rewrite) 332
* Fixes for developers:
* Replace logging methods in the C part, and relocated clib folder
* Added code coverage in travis CI