How to change your hugo theme

While writing this blog, I needed to change the theme. Here’s the steps to follow:

1) Pick a theme from https://themes.gohugo.io  
2) Get the URL for the themes' github repository. E.g for the theme of this blog ("tale") the URL is
https://github.com/EmielH/tale-hugo.git . 
3) Add the theme as a git submodule to your page's repository. From the project's root directory: 
   $> git submodule add <theme-url>
   and replace <theme-url> by your favourite theme's URL from 2) above. 
4) Commit and push the changes (you do not have to git-add the new theme as this is already accomplished by
git's submodule management).  

That's it.