🎉 Update license year

ggrossetie · ggrossetie · commit 068d36911cea · 2019-03-20T15:55:50.000+01:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (C) 2014-2018 Dan Allen, Guillaume Grossetie, Anthonny Quérouil and the Asciidoctor Project
+Copyright (C) 2014-2019 Dan Allen, Guillaume Grossetie, Anthonny Quérouil and the Asciidoctor Project
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
