architecture: use barracks

Changes
=======
- add hook handlers
- add effect composition
- add noFreeze option

Commits
=======
- fixup! fix toString()
- fixup! use assert instead of throw
- fixup! fix reducers
- fixup! work on done callbacks
- fixup! more callback work
- fixup! woooh fixed effects errs
- fixup! wrap up stuff

tests/server/index.js

@@ -98,7 +98,7 @@ tape('should render on the server', function (t) {
       })
     ])
 
-    const msg = /send\(\) cannot be called on the server/
+    const msg = /send\(\) cannot be called/
     t.throws(app.toString.bind(null, '/', { message: 'nyan!' }), msg)
   })
 })