Refactoring: Replaced MagData with VectorData and added ScalarData class (and common superclass FieldData).
magnitude is now called field (which is more appropriate)
projector now uses FieldData to process both vector and scalar data (foundation was in place before)

Added .idea folder with PyCharms settings.
Changed icon.ico (now round).
PhaseMap and MagData: Now use h5py to load/save data (via HyperSpy).
Deprecated loading routines (x3d) are gone now!
tests: All tests now reflect this change.
scripts: Streamlined some scripts. Many are now in separate project:
Script-Vault

costfunction: Now takes a ForwardModel as input instead of DataSet.
forwardmodel: New private function for processing one image (multiprocessing).
magdata: Quiver Plots (2D/3D) now support color encoding (angle or amplitude).
         Private method for creating the appropriate colormap.
reconstruction: Now takes Costfunction as argument instead of DataSet.
regularisator: Introduced ComboRegularisator.
scripts: New scripts.