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.

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

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

Added the fields submodule with field, shapes and vectors!
Added the vis module (not viz) with colors, decorators, plot2d, tools.
Added version.
Minor changes in pyramid.