Strikethrough text in markdown editor

[neoriae]

Hello,
Here's a report of what I think is a bug.
Thanks in advance for reading!

Operating system

Windows

Joplin version

3.2.5

Desktop version info

Joplin 3.2.5 (prod, win32)
Révision : 2da789a

Current behaviour

Strikethrough text in the markdown editor is not previewed as strikethrough, whereas this works for bold or italic text.

Expected behaviour

I think it's better to display the strikethrough text in the markdown editor, even if it's perhaps a little less easy to read.

[ARYPROGRAMMER]

@laurent22 In the current implementation

bold
italic

these two functions are very well working in the markdown editor preview but the strikethrough functionality is not.

I could solve this by simply integrating the already existing strikethrough method and passing it as a param to the editor so that the behaviour specified in the image is obtained. Relavant updates are also done in docs as well as a shortcut key "Alt-shift-5" is been allotted to speed up the strikethrough process in the editor.

let me know further, although I think this would not require much of changes. Could also think of adding relavant tests for the same.

[laurent22]

We'll deal with this in our own time