* Add analyze-bundles example

* housekeeping: with-webpack-bundle-analyzer example

* analyze-bundles example: revert the version of faker library

* analyze-bundles add analyze:server and analyze:browser to scripts

* with-webpack-bundle-analyzer example: fix typo

- Implements Lerna
- Moves all source code into `packages/next`
- Keeps integration tests in the root directory

- `<details>` and `<ul>` cannot be inside `<p>` and it will not be parsed correctly by the MDX tokenizer.
- `sh` is not a valid language name for syntax highlighting libs (e.g. [highlight.js](https://github.com/highlightjs/highlight.js/tree/master/src/languages)).

We don't need to `React.cloneElement`, twice.

This PR removes the obsolete `_containerProps` context.

### Next js 7+ and Typescript 3+ Example

No babel, tsc, pure typescript usage
Made by [next-with-typescript plugin](https://github.com/echoulen/next-with-typescript)

* Remove obsolete check in dev-server

* Don’t require package.json at runtime

Inline the Next.js version at publish time, so that there’s no runtime dependency for this

Remove `if(this.hotReloader)` as it's always guaranteed to be there.

https://github.com/zeit/next.js/pull/5317#discussion_r221233064

* Initial dev server

* Remove obsolete check

* Move hotReloader to dev-server

* Use parent renderErrorToHTML to remove dep on render.js

* Remove dev option from server itself

* show warning if there is a title in _document.js Head

* dont loop through children in production

* only 1 loop through this.props.children 💪

* also raise warning in test env

* check for null childs

- This makes sure the Next.js renderer / server doesn't have a dependency on the `http` module.
- Splits out util functions for SSR only
- Removes obsolete methods / methods that weren't being tree-shaken

To work with babel7 & next7.

* [with-typescript] Updated `@zeit/next-typescript` and typescript typings

* [with-typescript] Updated tsconfig to match new recommended config

* [with-typescript] upgraded dependencies, implement type-checking

* [with-typescript] add _document example, fixed tsconfig

* [with-typescript] updated README

* [with-typescript] updated example contents

* [with-typescript] adopt the Layout component from Flow example

An upstream bug in webpack-dev-middleware caused unhandled rejections to be swallowed.

Since version 2.1, react-apollo is exposing some new components that use the function-as-child (or render-prop) pattern to let you connect apollo-client magic with your components. See the blog article: [New in React Apollo 2.1](https://www.apollographql.com/docs/react/react-apollo-migration.html)

If I'm not mistaken, it's generally agreed that this pattern is (where it works) superior to the HOC pattern, for reasons that are best explained here: https://cdb.reacttraining.com/use-a-render-prop-50de598f11ce 

So I updated the with-apollo example to use the new API, and IMO this code is much simpler and natural to read and understand, especially if you are not already familiar with Apollo's HOC APIs.

I broke up my changes into separate commits, for easier review. Commits with "Refactor" in the message accomplish the goal of switching to the new APIs while minimizing line-by-line differences (select "Hide whitespace changes" under "Diff settings"). Commits with "Clean up" in the message follow up the refactoring with trivial things like reorganizing code sections, renaming variables, etc.

For the components doing mutations, I chose not to use the `Mutation` component, since that doesn't really make sense to me; a mutation is something that happens at a point in time, so it's not meaningful to represent a mutation in the markup, which exists for a period of time. All that component does is expose a `mutate` function for a single specified mutation, and `result` data for a single firing of the mutation (which we don't need anyways; apollo handles updating the local data with the result). To me it seems simpler and more flexible to just get the apollo client via `ApolloConsumer` and call `.mutate()` on it. 

In case anyone is interested, here's what my version of `PostUpvoter` using the `Mutation` component looked like:

 <details>

```jsx
import React from 'react'
import { Mutation } from 'react-apollo'
import { gql } from 'apollo-boost'

export default function PostUpvoter ({ votes, id }) {
  return (
    <Mutation mutation={upvotePost}>
      {mutate => (
        <button onClick={() => upvote(id, votes + 1, mutate)}>
          {votes}
          <style jsx>{`
            button {
              background-color: transparent;
              border: 1px solid #e4e4e4;
              color: #000;
            }
            button:active {
              background-color: transparent;
            }
            button:before {
              align-self: center;
              border-color: transparent transparent #000000 transparent;
              border-style: solid;
              border-width: 0 4px 6px 4px;
              content: '';
              height: 0;
              margin-right: 5px;
              width: 0;
            }
          `}</style>
        </button>
      )}
    </Mutation>
  )
}

const upvotePost = gql`
  mutation updatePost($id: ID!, $votes: Int) {
    updatePost(id: $id, votes: $votes) {
      id
      __typename
      votes
    }
  }
`
function upvote (id, votes, mutate) {
  mutate({
    variables: { id, votes },
    optimisticResponse: {
      __typename: 'Mutation',
      updatePost: {
        __typename: 'Post',
        id,
        votes
      }
    }
  })
}
```

</details>

###

I'm happy with where things are at here, but I'm more than happy to address any comments, concerns, ideas for improvent!

Thanks!

As they were failing intermittently, this PR tries to solve that.