* chore: update editor file import to use procedures and substitute operator
* feat: refactor editor file-import UI to reuse filter from $:/config/Editor/EnableImportFilter
* feat: support for markdown in editor file import UI
* feat: improve markdown type detection and enable markdown image imports by default
* fix: uri encode tiddler titles for markdown
* escape characters instead of URI encoding
* fix: tweak regexp to simplify code and document escaping rules
* Merge
* Clean up
* More clean up
* Ensure image import works when type is not set, clean up post import actions
* Removed spurious new line
* For non image files insert a tiddler link
* Added documentation for new settings and features