phototonic 2.1-2 (armhf binary) in ubuntu cosmic

 Phototonic is an image viewer and organizer for Linux written in C++ and Qt5.
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 Features:
   - Light weight with a smooth and clear user interface
   - Does not depend on any desktop environment
   - Supports several customized thumbnail layouts
   - Load thumbnails and browse images recursively on a folder tree
   - Dynamic thumbnails loading, enables fast browsing of very large folders
   - Filter thumbnails by name
   - Image navigation and file management
   - Slide show
   - Transformation: rotation, flipping, cropping, image mirroring and scaling
   - Adjust image brightness, saturation, hue and contrast
   - Keep transformations, zoom and colors while browsing multiple images
   - Extensive automatic and manual zoom options
   - Supported image formats: BMP, GIF, ICO, JPEG, MNG, PBM, PGM, PNG, PPM,
       TGA, XBM, XPM and SVG, SVGZ, TIFF with plugins
   - Supports GIF animations
   - Keyboard shortcuts and mouse behavior customization
   - Load image files or folders from command line
   - Open images with external applications