Added

- Optimize `nvim-treesitter/nvim-treesitter`.
- AUR packages.
- Support neovim lsp diagnostics.
- New highlight groups for coc-explorer.
- Outline of help doc.

Changed

- Remove duplicate docs in README.

Fixed

- Fix errors when doesn't set `g:colors_name`.
- Fix `DiffText` in Vim.
- Fix `CurrentWord` in diff mode.
- Fix `CursorColumn` in diff mode.
- Clear highlights when better performance is disabled.