v0.0.55

• Break change completion resolve requires CompleteChanged autocmd.
• Break change mapping of space on insert mode of list removed.
• Break change kind of completion item use single letter.
• Fix snippet not works on GUI vim.
• Fix cursor vanish on vim by use timer hacks.
• Fix behavior of list preview window.
• Fix python check on vim.
• Fix CocJumpPlaceholder not fired.
• Fix vscode-open command not work.