Single Channel Dolphin

This release features better support for KDE (Kubuntu etc) and the Dolphin file browser. TAB will open File Explorer in Windows, Nautilus in Gnome, and Dolphin in KDE. Note that the snap version of Tacent View does not support launching native file browsers. Use the deb install for this feature.

Fixed the app icon that appears in the KDE window title bar.

EXR display of single channel luminance images is now supported.