Merge branch 'release-0.2.0' into 'master'

README.rst

docs/fields.rst

docs/io.rst

docs/vis.rst

environment.yml

setup.cfg

src/empyre/fields/field.py

src/empyre/fields/shapes.py

src/empyre/fields/vectors.py

src/empyre/io/__init__.py

src/empyre/io/field_plugins/__init__.py

src/empyre/io/field_plugins/llg.py

src/empyre/io/field_plugins/numpy.py

src/empyre/io/field_plugins/ovf.py

src/empyre/io/field_plugins/tec.py

src/empyre/io/field_plugins/text.py

src/empyre/io/field_plugins/vtk.py

src/empyre/io/io_field.py

src/empyre/utils/misc.py

src/empyre/vis/__init__.py