Added data masking object.
Added masking controls to interface
Changed viewport fx:id
Labeled minimum and maximum mask entry.
Added property "getters" for MARTiffImage features.
Added increment/decrement actions for mask.
Corrected mask implementation.
Implemented default masking upon image change.
Added custom markup initialization and controller base classes.
Removed JavaFX-specific-formatted properties from TiffBase object.
Added class containing viewport titles.
Created JavaFX wrapper for MARTiffImage object.
Changed wrapper property names.
Drafted viewport containers.
Implemented viewport containers in controller and markup.
Get controller instance from markup loader.
Removed excess lines, comments, and imports.
Created control base (for later experimentation).
Created skeleton for value adjustment controls.
(Miscellaneous) Enlarged viewport.