Resqpy

This release introduces a new resqpy module, strata.py, containing classes for most of the RESQML stratigraphy classes (currently not catered for are obj_GlobalChronostratigraphicColumn and obj_StratigraphicOccurrenceInterpretation).

Note that RESQML models with stratigraphy generated by resqpy have not yet been successfully loaded into any non-resqpy application.

This patch fixes a bug affecting the UnstructuredGrid centre_point() method when called for a single cell.

This patch adds several methods to the resqpy UnstructuredGrid and derived classes.

The new methods include, for example, the means to calculate the area of faces and the volume of cells.

There are also a few minor bug fixes and code improvements.

This release includes a new module (unstructured.py) providing initial code to support working with RESQML UnstructuredGridRepresentation objects. The main new resqpy class is UnstructuredGrid, with specialised derived classes TetraGrid, PryamidGrid, PrismGrid and HexaGrid which can be used when the RESQML cell shape is 'tetrahedral', 'pyramidal', 'prism' and 'hexahedral' respectively.

The intention is to expand the functionality provided by these classes in later releases.

This patch makes a small change to the PropertyCollection.set_support() method: The model attribute of the collection now remains set when the supporting representation is cleared or multiple supporting representations are present in a collection.

An earlier patch was made to allow arbitrary structure to hdf5 internal paths. That change introduced a secondary issue affecting the Model methods copy_part_from_other_model() and copy_all_parts_from_other_model(). This patch resolves that secondary issue.