Fix dependencies so archived 1.8.3 will build.

package.json

@@ -23,8 +23,8 @@
 	],
 	"dependencies": {},
 	"devDependencies": {
-		"grunt-compare-size": ">=0.1.0",
-		"grunt-git-authors": ">=1.0.0",
+		"grunt-compare-size": "~0.2.0",
+		"grunt-git-authors": "~1.0.0",
 		"grunt": "~0.3.9",
 		"testswarm": "0.2.2"
 	},