goldmark-wikilink

Added

• Support parsing embedded wikilinks in the form, ![[...]].
• Support embedding images inside documents.

Changed

• The default resolver now adds the .html suffix to a target
  only if the target does not already have an extension.

Fixed

• Fix data race in node destination tracking in the Renderer.

Changed

• Change the module path to go.abhg.dev/goldmark/wikilink.

Changed

• Renderer: Don't render links if Resolver returns an empty destination.

Added

• Node: Add Fragment field to track the # portion of a link.

Changed

• Parser: Pull apart # portion of a link into Fragment field.
• Renderer: Support links without titles. This makes wikilink references to
  headers in the same document possible with [[#Foo]] possible.

Initial release.