[FEATURE] Support Wiki-style links

[pbek]

It would be great to support Wiki-style links, like [[chess]] to notes.

[pbek]

26.3.20

• Added optional wiki-style link support — enable it in the Editor settings
  with the new Enable wiki-style link support [[note name]] checkbox
  (for #3512)
  • Write [[Note Name]] to link to a note by name; subfolder-qualified links
    like [[subfolder/Note Name]] and heading anchors like [[Note#Heading]]
    are also supported, as well as display-text aliases like [[Note|My Label]]
  • Resolved links are highlighted in the editor with a dotted underline using
    the link color; broken (unresolved) links use a dashed underline with the
    broken-link color
  • Clicking a wiki link in the note preview navigates to the target note;
    if the note does not exist you are asked whether to create it
  • Ctrl+Click on a wiki link in the note editor navigates to the target
    note (or offers to create it); Ctrl+Shift+Click opens it in a new tab
  • The Insert link dialog (Ctrl+L) gains a Create wiki-style link
    [[...]] checkbox (visible only when wiki-link support is enabled) to
    insert the selected note as a [[Note Name]] link instead of a Markdown link
  • Typing [[ in the editor triggers auto-complete with a filtered list of
    all note names (including subfolder-qualified paths); a suggestion can also be
    triggered via the normal auto-complete shortcut inside an open [[
  • Wiki links are included in backlink detection and shown in the backlinks
    panel; when a subfolder is renamed all qualified [[subfolder/...]] links
    across all notes are updated automatically