Upgrade halogen to 0.7.0; upgrade psc in build (#14)

* [dev deps] Update purescript compiler to 0.8.5

* Update purescript-halogen to 0.7.0

Author: jonsterling

bower.json

@@ -25,7 +25,7 @@
   "dependencies": {
     "purescript-ace": "^0.11.0",
     "purescript-datetime": "^0.9.1",
-    "purescript-halogen": "^0.6.1",
+    "purescript-halogen": "^0.7.0",
     "purescript-random": "^0.2.3",
     "purescript-refs": "^0.2.0"
   }

package.json

@@ -10,7 +10,7 @@
   },
   "devDependencies": {
     "pulp": "^8.1.0",
-    "purescript": "^0.7.6",
+    "purescript": "^0.8.5",
     "rimraf": "^2.5.2"
   }
 }