Dev server issues

[unlight]

1. Expose server instance

This need need graceful shutdown and to subscribe on events like close, etc.

gulp.task('server:dev', (done) => {
    const server = fuseBox.devServer('>main.ts');
    server.on('close', () => done);
});

2. Allow to add middlewares

The most used middlewares for dev server are:

1. Proxy
2. connect-history-api-fallback (Angular2)

[unlight]

3. Provide Api (server) for explicitly call client's refresh (hot and full)

[nchanged]

In 1.3.72

const devServer = fuseBox.devServer(">index.ts", {
    port: 8083,
    root : false // if you want to serve "/" by yourself
});
devServer.httpServer.app.use(/* your middleware */)

API thingy has been moved to a different issue