Better requirements handling.

spec/cached.cr

@@ -1,7 +1,7 @@
 require "spec"
 require "file_utils"
 
-require "../src/cached.cr"
+require "../src/dodb.cr"
 require "./test-data.cr"
 
 
@@ -113,7 +113,8 @@ describe "DODB::DataBase::Cached" do
 #				db_ships_by_name.get?(ship.name).should eq(ship)
 #			end
 #		end
-#
+#	end
+
 #		it "raise on index overload" do
 #			db = DODB::SpecDataBase.new
 #

src/cached.cr

@@ -1,8 +1,6 @@
 require "file_utils"
 require "json"
 
-require "./dodb.cr"
-
 class Hash(K,V)
 	def reverse
 		rev = Array(Tuple(K,V)).new

src/dodb.cr

@@ -336,3 +336,4 @@ class DODB::DataBase(V)
 	end
 end
 
+require "./cached.cr"