group.rb in salus-0.2.0

- old
+ new

@@ -1,8 +1,10 @@
 require "forwardable"
 require "salus/metric"
 require "salus/metric/absolute"
+require "salus/metric/accumulator"
 require "salus/metric/counter"
+require "salus/metric/delta"
 require "salus/metric/derive"
 require "salus/metric/gauge"
 require "salus/metric/text"
 
 module Salus