Update composer.json

Bumping composer version for packagist update. Relates to php version number increment.

Author: Matthew Garde

composer.json

@@ -19,7 +19,7 @@
         ]
     },
     "type": "magento2-module",
-    "version": "2.0.7",
+    "version": "2.0.8",
     "authors": [
         {
             "name": "PCA Predict",