Hugo v0.55 has breaking changes that break some features and also warns of future deprecation of several variables. See https://github.com/gohugoio/hugo/releases/tag/v0.55.0

Therefore, refactor the code and require Hugo v0.55+ going forward.

• Refactor code based on Hugo v0.55 log messages:
  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.

WARN Page's .Hugo is deprecated and will be removed in a future release. Use the global hugo function.
WARN Page's .RSSLink is deprecated and will be removed in a future release. Use the Output Format's link, e.g. something like: 
    {{ with .OutputFormats.Get "RSS" }}{{ . RelPermalink }}{{ end }}.
WARN Page's .Dir is deprecated and will be removed in a future release. Use .File.Dir.
WARN Page's .UniqueID is deprecated and will be removed in a future release. Use .File.UniqueID.
WARN Page's .URL is deprecated and will be removed in a future release. Use .Permalink or .RelPermalink. If what you want is the front matter URL value, use .Params.url.

Also, due to the breaking changes in Hugo v0.55, the following may need refactoring to work with Hugo v0.55+:

• Links to local page resources are now broken (such as for local "PDF" and "bib")

  • Caused by bug in Hugo v0.55.0. Fixed in Hugo v0.55.2: 0.55: resource in bundle is found but link is invalid gohugoio/hugo#5858

  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.
• Shortcodes no longer work properly > Behaviour has changed for Shortcodes using the {{% construct

  • "If you want the old behavior, you can put the following line in the start of your shortcode template: {{ $_hugo_config := { "version": 1 } }}"

  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.
links to authors without profiles no longer works?
preserveTaxonomyNamesconfiguration option is removed. Use .Page.Title.
• We no longer add XML headers to Output Formats that output XML (<?xml version="1.0" encoding="utf-8" standalone="yes" ?>). This header is moved to the templates. If you have custom RSS or sitemap templates you may want to add the XML declaration to these. Since they, by default, is handled by Go's HTML template package, you must do something like this to make sure it's preserved: {{ printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\" ?>" | safeHTML }}

  • upgrade rss.xml, remove sitemap.xml to revert to Hugo's latest internal tpl

  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.
• The taxonomy nodes now have a .Page accessor which makes it much simpler to get a proper .Title etc.

  • upgrade tag_cloud.html

  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.