Feature Request: Upgrade tui.editor from version 2.5 to version 3.x

[kiyoka]

Reasons to upgrade

1. Because tui.editor 2.5 has a bug, so Feature Request: Ability to easily get the full path of the image #134 cannot be implemented. tui.editor 3.2 does not have the same bug.

• See also the following comments
  Feature Request: Ability to easily get the full path of the image #134 (comment)

2. The main focus of the tui.editor project has moved to tui.editor 3.x, so any problems in tui.editor 2.5 may not be fixed.

Required Work

1. Follow the migration guide below.
   https://github.com/nhn/tui.editor/blob/master/docs/v3.0-migration-guide.md
   I believe it is better to actually do the work to see what kind of work will be involved.

[kiyoka]

I share the current status.
A few problems remain, but it is mostly working with tui.editor 3.0.0.

https://github.com/kiyoka/unotes/commits/fix_issue_137.tmp1

Remaining issues:

• The tui.editor plugin interface has changed, so the katex plugin interface needs to be changed.
• The scroll position moves to the bottom of the page when it is auto-saved. (markdown mode only).
• tui.editor 3.2.0 has a bug as follows, so I decided to use tui.editor 3.0.0 .
  https://pullanswer.com/questions/latest-version-has-broken-the-insert-url-link-functionality
• Since tui.editor 3.x now supports dark mode, I would like to change to use it.

[kiyoka]

Remaining issues:

• The tui.editor plugin interface has changed, so the katex plugin interface needs to be changed.
• Key bindings like Ctrl + ALT + 1, Ctrl + ALT + 2, ... do not work.

[kiyoka]

Remaining issues:

• The tui.editor plugin interface has changed, so the katex plugin interface needs to be changed.

[kiyoka]

All remaining issues have been cleared.
I will use new Unotes for a while and if I have no problem using it, I will pull request it.

[ryanmcalister]

I'm going to close this since it's been released in v1.5.0