• Break change: all extension all seperated from core, checkout
  Using coc extension
• Fix textDocumentSync option not work when received as object.
• Fix wrong diagnostic info when using multiple lint servers.
• Use CursorHold for show diagnostic message.
• Add option coc.preferences.enableMessage to disable showing of diagnostic
  message.
• Add new events module for receive vim events.
• Add support for prepareRename.
• Add support for CodeActionOptions