Perf Improvment: Split on first occurance

For large caches, this prevents split from reading the entire string.

Author: jho406

lib/props_template/extension_manager.rb

@@ -91,7 +91,7 @@ def handle_cache(options, item)
           result
         end
 
-        meta, raw_json = state.split("\n")
+        meta, raw_json = state.split("\n", 2)
         next_deferred, next_fragments = Oj.load(meta)
         deferred.push(*next_deferred)
         fragments.push(*next_fragments)