Release 0.14.1 of ctioga2

With the (relatively, sorry) recent switch to ruby2.3 as default Ruby version, I realized that my plotting program ctioga2 crashed with ruby 2.3 (due to a rather ugly lazy hack). I have just fixed this in release 0.14.1. Update as usual with:

~ gem update ctioga2

If you're not using Ruby 2.3, you probably don't need to update soon, though. Enjoy !