Upgrade 0.53 to 0.54

Change startupjs and all @startupjs/* dependencies in your package.json to ^0.54.

Bug Fixes

babel-plugin-rn-stylename-inline: fix compilers validation (#1074) (29722fe)
mdxExamplesLoader: fix renderer (57b84f4)
server remove server side routing (#1078) (71bc3f0)

Features

babel-plugin-rn-stylename-inline: throw an error if import is not specified (#1070) (29d6194)
babel-plugin-startupjs-utils throw an error if import of 'pug' is not specified (#1075) (f166938)

BREAKING CHANGES

Import validation for pug and styl has been enabled:

Now if you are using pug or styl template, you MUST import them from 'startupjs':
```
import { pug, styl } from 'startupjs'
```

`startupjs/routes-middleware`

Package has been removed.

`startupjs/server`

Remove appName argument from getHead(req)