darkholme.rb in darkholme-1.1.0

- old
+ new

@@ -1,4 +1,6 @@
+require 'json'
+
 require 'darkholme/bitset'
 require 'darkholme/engine'
 require 'darkholme/entity'
 require 'darkholme/system'
 require 'darkholme/iterating_system'