Specific designs per OS, coords and values on plotting panels

This versions uses different designs on macOS, Windows and Linux.
Standalone applications are done with cx_Freeze.
Coordinates and values under the mouse pointer are printed continuously onto the plotting panels.
ncvue works in ipython and jupyter notebooks.

Added standalone apps for macOS and Windows

This version adds two standalone applications on macOS and on Windows. The code was adapted to provide correct icons on both OS and allow for modern high resolution displays.

Open netcdf files from within ncvue

This release includes the possibility to open and change netCDF files within ncvue. The netCDF file will be changed in all panels of the primary window and any secondary window once focus changes on the panel or window.

First tested full-featured release of ncvue

First full-featured release of ncvue, a minimal GUI for a quick view of netCDF files. It is aiming to be a drop-in replacement for ncview, being slightly more general than ncview, which targets maps. If ncvue is used with maps, it supports mostly structured grids, more precisely the grids supported by cartopy.

This release features three panels, that means three different plotting styles: Scatter/Line plots, Contour Plots, and Maps.
It includes tooltips on buttons, sliders, entry boxes, spinboxes, and menus. Graphical documentation exists on Github Pages.