vectors.py: More documentations and more fine control over
vector and skyrmion chirality and orientation.
Also fixed create_vector_singularity.
colors: Added a namespace for colormaps
(instead of a dictionary) to ease access to the maps.
CMAP_CIRCULAR_DEFAULT is therefore deprecated now!
plot2d: significantly simplified the symmetric color map handling with
DivergingNorm (which was built for exactly that).

Can be used to specify which axis holds the components.
Also usable by load_field function!
Useful for backwards compatibilty with Pyramid.

3D now always has 3 components, 2D only if theta is specified!

Added some more documentations, added io.rst.
Converted scale to floats everywhere it is set by default.
Removed superfluous enumeration in reader/writer in io_field.
Fixed vector default and name saving in ovf.py.
Fixed vector default and necessity of dim in tec.py.
Fixed erronous dim -> scale assignment in vtk.py.
Fixed interp_to_regular_grid not using the multidim. scale correctly.

Release 0.1.0

Closes #39, #8, #12, #14, #16, #17, #18, #26, #36, and #42

See merge request empyre/empyre!29

from tests_requires to extras_requires:tests

due to origin being lower, not higher as is default in maptlotlib

utils: Has quaternion and misc submodules
    misc has levi_civita and interp_to_regular_grid (used later for io)
field: Added HyperSpy support (get/set_signal)
    added copy/rotate/rot90/set_vector/get_vector methods

Also added mayavi to requirements in setup.cfg and environment.yml.
Added documentation on how to activate 3D notebook plotting with mayavi.
Fixed some bugs in io_field.py.
Fixed bug in reader of llg.py.

from tests_requires to extras_requires:tests

due to origin being lower, not higher as is default in maptlotlib

utils: Has quaternion and misc submodules
    misc has levi_civita and interp_to_regular_grid (used later for io)
field: Added HyperSpy support (get/set_signal)
    added copy/rotate/rot90/set_vector/get_vector methods

Update gitlab URL in issue template

Closes #5

See merge request empyre/empyre!28

Release 0.1.0

See merge request empyre/empyre!27

Done by envoking python setup.py clean before!

to include package_data, i.e. mplstyles

Merge branch 'empyre-preparation-0.0' of iffgit.fz-juelich.de:empyre/empyre into empyre-preparation-0.0