Image-analysis

Bug fixes and basic curve plotting

Added
- Ability to view sets of 1D curves in the newly added CurveView area

Fixed
- Refactored pyqtgraph.QtGui objects to PyQt5.QtWidgets
- Normalization factor for images

Coordinate intervals and 3D image exporting

Added
- Coordinate intervals to all image plots
- Ability to export 3D images to VTK image data format
- Generalized function for converting 3D numpy arrays to .vti (VTK) files

Line segment ROI improvements.

Added
- 2D to 1D ROI slicing capabilities for both raw and gridded data.

Fixed
- Pixels with a value of 0 are now represented as blank pixels.

Line segment ROI's and QOL fixes

Added
- Line segment ROI objects that can be added to the main ImagePlot that will produce a 2D slice of the contained pixels
- Basic keyboard shortcuts (Close: Ctrl+W or Ctrl+Q, Minimize: Ctrl+-, Full Screen: Ctrl+Shift+F)

Fixed
- More efficient color mapping
- Gridded Data: Image is automatically scaled when dimension order changes

Additional color mapping functions and mouse tracking

Added
- Option to change maximum pixel value of a color map
- Mouse info section that tracks HKL positions and intensity of a pixel when hovered over

Fixed
- Color bars now accurately represent an image's color map

Basic color mapping.

Added
- ColorMapWidget for creating custom color maps