Python LSP Server v1.3.0

Major release of python-lsp-server with the following new features and changes:

• New cache for code snippets to speed up completions.
• Option jedi_completion.resolve_at_most_labels was renamed to jedi_completion.resolve_at_most because now it controls how many labels and snippets will be resolved per request.
• Option jedi_completion.cache_labels_for was renamed to jedi_completion.cache_for because now it controls the modules for which labels and snippets should be cached.
• Update requirements on Pylint, flake8, pycodestyle, pyflakes and autopep8.