update dependencies

Author: jdegoes

bower.json

@@ -18,12 +18,12 @@
     "package.json"
   ],
   "dependencies": {
-    "purescript-either": ">=0.1.2",
-    "purescript-maybe": ">=0.1.3",
-    "purescript-foreign": ">=0.1.1",
-    "purescript-node-buffer": "*",
-    "purescript-node-path": ">=0.1.0",
-    "purescript-datetime": "*",
-    "purescript-exceptions": "~0.2.0"
+    "purescript-either":        "~0.1.3",
+    "purescript-maybe":         "~0.2.1",
+    "purescript-foreign":       "~0.2.0",
+    "purescript-node-buffer":   "*",
+    "purescript-node-path":     "~0.2.0",
+    "purescript-datetime":      "~0.1.0",
+    "purescript-exceptions":    "~0.2.1"
   }
 }