@th-koeln/graphql-docs v0.3.0

This is a fork of Daniel Rearden's fork of Magnus Hallin's awesome GraphQL-Docs.

Here's what's new:

• Support for Subscriptions

Daniel Reardens Changes:

• Implement Fatih Kadir Akın's fix adding support for Union Type
• Group types by definition (Object, Input, Interface, etc.)
• Sort types within each grouping alphabetically
• Add a header for each grouping (with link)
• Add fixed side navigation
• Implement search with autocomplete using react-typeahead
• Misc style changes, like pretty scrollbars :)