4.3.0

• bumps to GraphQL Code Generator v1
• adds GraphQL named fragment support
• removes webpack-node-externals, in favour of building a single server.js bundle
• updates README for GraphQL Code Generator v1
• bumps NPM packages:
  @emotion/core ^10.0.7 → ^10.0.10
  @emotion/styled ^10.0.7 → ^10.0.10
  apollo-cache-inmemory ^1.4.3 → ^1.5.1
  apollo-client ^2.4.13 → ^2.5.1
  apollo-link ^1.2.8 → ^1.2.11
  apollo-link-error ^1.1.7 → ^1.1.10
  apollo-link-http ^1.5.11 → ^1.5.14
  apollo-link-ws ^1.0.14 → ^1.0.17
  apollo-utilities ^1.1.3 → ^1.2.1
  cross-fetch ^3.0.1 → ^3.0.2
  dotenv ^6.2.0 → ^7.0.0
  emotion ^10.0.7 → ^10.0.9
  graphql ^14.1.1 → ^14.2.1
  history ^4.7.2 → ^4.9.0
  ora ^3.1.0 → ^3.4.0
  react ^16.8.2 → ^16.8.6
  react-apollo ^2.4.1 → ^2.5.3
  react-dom ^16.8.2 → ^16.8.6
  react-hot-loader ^4.7.0 → ^4.8.2
  react-router-dom ^4.3.1 → ^5.0.0
  subscriptions-transport-ws ^0.9.15 → ^0.9.16
  @babel/core ^7.3.3 → ^7.4.3
  @hot-loader/react-dom ^16.8.2 → ^16.8.6
  @types/koa-router ^7.0.39 → ^7.0.40
  @types/koa-send ^4.1.1 → ^4.1.2
  @types/lodash ^4.14.121 → ^4.14.123
  @types/node ^11.9.4 → ^11.13.0
  @types/ora ^3.0.0 → ^3.2.0
  @types/prop-types ^15.5.9 → ^15.7.0
  @types/react ^16.8.3 → ^16.8.12
  @types/react-dom ^16.8.2 → ^16.8.3
  @types/source-map-support ^0.4.2 → ^0.5.0
  @types/webpack ^4.4.24 → ^4.4.27
  @types/webpack-dev-server ^3.1.2 → ^3.1.5
  babel-plugin-emotion ^10.0.7 → ^10.0.9
  css-hot-loader ^1.4.3 → ^1.4.4
  css-loader ^2.1.0 → ^2.1.1
  koa-webpack ^5.2.1 → ^5.2.2
  lint-staged ^8.1.4 → ^8.1.5
  postcss-preset-env ^6.5.0 → ^6.6.0
  resolve-url-loader ^3.0.1 → ^3.1.0
  source-map-support ^0.5.10 → ^0.5.11
  ts-node ^8.0.2 → ^8.0.3
  tslint ^5.12.1 → ^5.15.0
  typescript ^3.3.3 → ^3.4.1
  webpack ^4.29.5 → ^4.29.6