Migration steps for Hugo v0.147.9

To fully migrate to v0.147.9 you should follow the following steps (if you did not already do so):

• move everything from the _default directory to the root of the layouts folder
• remove the _default folder
• rename all single.html files to page.html
• rename all list.html files to section.html
• move everything from the layouts/page folder to the root of the layouts folder
• remove the page folder
• rename the config.yaml (or toml/json) file to hugo.yaml (or toml/json)
• replace :filename to :contentbasename

If you had a single.html in your layouts directory and a single in your layouts/page directory, you should follow these instructions.