added to_a method

shard.yml

@@ -1,6 +1,6 @@
 name: lifo
 description: A library for working with LIFO like data structures (stacks, queues).
-version: 0.1.2
+version: 0.1.3
 
 authors:
   - Dominic Grimm <dominic.grimm@gmail.com>

src/lifo.cr

@@ -1,5 +1 @@
-require "./lifo/version"
-require "./lifo/exception"
-require "./lifo/lifolike"
-require "./lifo/stack"
-require "./lifo/queue"
+require "./lifo/*"

src/lifo/lifolike.cr

@@ -16,5 +16,9 @@ module Lifo
     def empty? : Bool
       size == 0
     end
+
+    def to_a : Array(T)
+      @data
+    end
   end
 end