Remove * from Fractal requirement

Let's see if this passes.

Author: aejnsn

composer.json

@@ -14,7 +14,7 @@
         "illuminate/routing": "~5.1",
         "illuminate/support": "~5.1",
         "dingo/blueprint": "0.1.*",
-        "league/fractal": ">=0.12.*",
+        "league/fractal": ">=0.12.0",
         "doctrine/annotations": "1.2.*",
         "phpdocumentor/reflection-docblock": "2.0.*"
     },