2.0.0

• 8a63f2a Update unified-language-server
  by @remcohaszing in #9
  see: https://github.com/unifiedjs/unified-language-server/releases/tag/3.0.0
• 14b85c8 Remove support for Node.js 12
  by @remcohaszing in #8

Full Changelog: 1.1.0...2.0.0