bump version

ivan.evgrafov · ivan.evgrafov · commit d05aee80898d · 2018-01-29T10:56:19.000+04:00
diff --git a/lib/gnuplotrb/version.rb b/lib/gnuplotrb/version.rb
@@ -4,5 +4,5 @@
 module GnuplotRB
   ##
   # Gem version
-  VERSION = '0.3.4'
+  VERSION = '0.4.0'.freeze
 end
