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/views/main.js

@@ -1,7 +1,7 @@
 const html = require('../../../html')
 
 module.exports = function (params, state, send) {
-  const error = state.app.error[0]
+  const error = state.app.errors[0]
   const title = state.api.title
   return html`
     <section>