Environment data

• Language Server version: master branch (last compiled on 51b2532ddc0161aecadda182b33f1b15ed6093b0
• OS and version: MacOS 10.14.6
• Python version (& distribution if applicable, e.g. Anaconda): 3.7.4

Expected behaviour

Python Language Server emits valid completion items.

Actual behaviour

Python Language Server emits completion items with kind value of 0 as described in autozimu/LanguageClient-neovim#633 (comment)

Zero is not a valid CompletionItemKind according to the Language Server specification
https://microsoft.github.io/language-server-protocol/specification

/**
* The kind of a completion entry.
*/
namespace CompletionItemKind {
  export const Text = 1;
  export const Method = 2;
  export const Function = 3;
  export const Constructor = 4;
  export const Field = 5;
  export const Variable = 6;
  export const Class = 7;
  export const Interface = 8;
  export const Module = 9;
  export const Property = 10;
  export const Unit = 11;
  export const Value = 12;
  export const Enum = 13;
  export const Keyword = 14;
  export const Snippet = 15;
  export const Color = 16;
  export const File = 17;
  export const Reference = 18;
  export const Folder = 19;
  export const EnumMember = 20;
  export const Constant = 21;
  export const Struct = 22;
  export const Event = 23;
  export const Operator = 24;
  export const TypeParameter = 25;
}

The result of Python Language Server emitting completion items with "kind":0 breaks completion for language clients, like LanguageClient-neovim, that are set up to handle the Language Client spec.

Logs

N/A

Code Snippet / Additional lnformation

The example I gave in autozimu/LanguageClient-neovim#633 (comment) was

import logging

logging.getLogge