* Added RPATH to executable; lowercased name; fixed MRIVERSION option; made it look like an actual executable
* Silencing some compiler warnings
* Getting rid of journal binding header, fixing bugs with the Niko binding and synchronizing the two
* Journal update to fix several bugs
* Fix libpng warning by running mogrify on shrimp.png
* Improved automation of the Linux build
* Improved some aspects of wallpaper handling
* Bump default Ruby version to 2.5
