reverts previous commit

It's probably a better idea to fix the tag instead.

composer.json

@@ -15,7 +15,7 @@
         "php": ">=5.3.2",
         "jms/metadata": ">=1.1.0,<1.3-dev",
         "jms/parser-lib": "1.*",
-        "phpcollection/phpcollection": "0.10.*",
+        "phpcollection/phpcollection": "0.1.*",
         "doctrine/common": "2.*"
     },
     "suggest": {