Update zmap_reader.py to handle rotated roxar grids (bp#885)

* Update zmap_reader.py to handle rotated roxar grids

* Update zmap_reader.py

added import

* Update zmap_reader.py

Extra indent to avoid zmap

* Update test_surface.py

Add test

* Create Surface_roxartext_rotate.txt

New dataset for testing

Merge pull request bp#884 from bp/tri_mesh_area

Tri mesh area method

Merge pull request bp#883 from bp/find_k_faces_only

adds direction argument to find_faces... to allow limiting of search …

Merge pull request bp#882 from bp/listric_buglet

correcting FaultInterpretation connection between is_listric and is_normal

Merge pull request bp#881 from bp/patchwork_gcs

patchwork grid connection set for filtered faces only

Merge pull request bp#880 from bp/patch_box_for_packed_composite_bise…

…ctor_update

Patch box for packed composite bisector update

Merge pull request bp#877 from bp/boxed_patch_bisector

tentative patch boxes during bisector generation

Merge pull request bp#876 from bp/patch_cleanup

fix of bug affecting find faces bisectors when using patches and packing

Merge pull request bp#875 from bp/triangles_nv

adds vec utility function to compute set of normal vectors for triangulated set

Merge pull request bp#874 from bp/crs_copy

fixing bug affecting crs uuid references in surface patches during consolidation