All tagged up
Merge pull request #931 from UV-CDAT/tag-2.1.0

All tagged up
fixed stupid bug that broke everything
Merge pull request #932 from UV-CDAT/quick_fix_for_broken_2.1

fixed stupid bug that broke everything
added test file
turn off mesh
Merge pull request #934 from UV-CDAT/turn_off_mesh_draw_in_basic_test

turn off mesh
Merge pull request #935 from UV-CDAT/add_isoline_test

added test file