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

examples/http/client.js

@@ -2,7 +2,26 @@ const choo = require('../../')
 
 const mainView = require('./views/main')
 
-const app = choo()
+const app = choo({
+  onError: function (err, state, createSend) {
+    console.groupCollapsed(`Error: ${err.message}`)
+    console.error(err)
+    console.groupEnd()
+    const send = createSend('onError: ')
+    send('app:error', err)
+  },
+  onAction: function (action, state, name, caller, createSend) {
+    console.groupCollapsed(`Action: ${caller} -> ${name}`)
+    console.log(action)
+    console.groupEnd()
+  },
+  onState: function (action, state, prev, createSend) {
+    console.groupCollapsed('State')
+    console.log(prev)
+    console.log(state)
+    console.groupEnd()
+  }
+})
 
 app.model(require('./models/error'))
 app.model(require('./models/api'))