updates to packages and effect (#63)

* - update the packages to latest versions
- use simplified effects
- compiles on purs 0.12.0

* update package.json

Author: sharno

bower.json

@@ -20,10 +20,10 @@
     "url": "git://github.com/paf31/purescript-canvas.git"
   },
   "dependencies": {
-    "purescript-eff": "^3.0.0",
-    "purescript-functions": "^3.0.0",
-    "purescript-maybe": "^3.0.0",
-    "purescript-exceptions": "^3.0.0",
-    "purescript-arraybuffer-types": "^1.0.0"
+    "purescript-effect": "^2.0.0",
+    "purescript-functions": "^4.0.0",
+    "purescript-maybe": "^4.0.0",
+    "purescript-exceptions": "^4.0.0",
+    "purescript-arraybuffer-types": "^2.0.0"
   }
 }

package.json

@@ -6,9 +6,9 @@
     "test": "pulp test"
   },
   "devDependencies": {
-    "pulp": "^11.0.0",
-    "purescript-psa": "^0.5.0",
-    "purescript": "^0.11.1",
-    "rimraf": "^2.5.4"
+    "pulp": "^12.2.0",
+    "purescript-psa": "^0.6.0",
+    "purescript": "^0.12.0",
+    "rimraf": "^2.6.2"
   }
 }