2021-09-07：
addon/hint/show-hint.css  z-index: 99999; 从10设置为99999


版本：codemirror-5.62.3




hint流程：
init.js  completeAfter()->sql-hint.js CodeMirror.defineExtension("showHint",function(){})->sql-hint.js fetchHints()->sqlhint.js CodeMirror.registerHelper("hint", "sql")
->