gosu_extensions.rb in gosu_extensions-0.3.3

- old
+ new

@@ -30,9 +30,10 @@
 
 require 'trait'
 require 'traits'
 require 'it_is_a'
 
+require 'threading'
 require 'background'
 require 'sprites'
 require 'things'
 require 'objects'
 require 'wave'
\ No newline at end of file