[x] top viewport as a matplotlib 3d plot, included the navigation toolbar
[x] info_panel on the right side of the vertices table as a debugging display of info being passed to the plot
[x] Render Top Viewport button in mainwindow
[x] JsonTableWidget as the abstract base class for PaletteTable and VerticesTable
[x] InteractiveTablePanel as the intermediate widget holding the JsonTableWidget, plus a open file button, a save file button, and a label for the file name that doesn't actually update yet
[x] modified format of input .json for palettes to include lists of ints [r, g, b] instead of a dict of str, int {r: , g: , b: _}
Still need to create a file dialog widget that doesn't include opening an entire new window. Also want to convert the entire flow. More in #14
Added
info_panelon the right side of the vertices table as a debugging display of info being passed to the plotStill need to create a file dialog widget that doesn't include opening an entire new window. Also want to convert the entire flow. More in #14