markdown_widget 1.1.5-hotfix

A new markdown package. It supports TOC function, HTML video and img tag，and it works well on both the web and mobile

[1.1.5-hotfix] - add text to PreWrapper

[1.1.5] - add PreWrapper, and HighlightCode can be automatically detected with null language

[1.1.4] - fix issue #13 and #16, deprecated compute function

[1.1.3] - add loadingWidget before data is ready, improve performance in the first rendering

[1.1.2] - support dark mode now! see issue #12

[1.1.1] - offer custon html tag to user, fix issue #8

[1.1.0] - fix issue #6

[1.0.9] - add LinkGesture to PConfig to fix issue #4

[1.0.8] - add CommonStyle to title, add selectable to PConfig

[1.0.7] - fix ImgBuilder send a null image url

[1.0.6] - fix ImgBuilder not working correctly

[1.0.5] - Add CodeConfig, format code and change markdown_widget description

[1.0.4] - Add ImgConfig, Improve code description and online demo

[1.0.3] - Fix TocListWidget data error in mobile, edit README

[1.0.2] - Reduce the difficulty of TOC function, improve the basic functions of the package

[1.0.1] - Add ImgConfig, clear data when markdown_widget rebuilded

[1.0.0] - Complete base functions