editor@3.1.1

Bugfixes

• Fixed that <br> operation when converting editor mode, pasting data or calling API.(#1807)
• Fixed the vulnerability about sanitizer using DOMPurify.(#1813)
• Fixed that the user cannot add line break in list using shift + enter key.(#1816)
• Fixed the wrong type definition(@toast-ui/editor/dist/toastui-editor-viewer).(#1853)
• Fixed that the line breaks are removed when pasting the viewer data to editor.(#1854)
• Fixed that the user cannot close toolbar popup.(#1855)
• Fixed that the table head is missing when pasting the table from ms word.(#1857)
• Added the missing exports(toastui-editor-only.css).(#1946)