Where can I find the changelog of the Customizr themes ?
Customizr (free) changelog
In your WordPress Admin
Under Appearance > About Customizr, at the bottom of the page, you'll find the changelog of your current version of the theme.
In the theme's folder
The theme includes a readme.txt file in the root folder where you’ll find an history of all changes until the current version : in wp-content/themes/customizr/readme.txt
You’ll find the latest changelog on our Github page.
On WordPress.org, you’ll find a development log of the theme.
Note : you can download any previous versions of the Customizr theme from the WordPress themes repository. Simply use the following type of download link : https://downloads.wordpress.org/theme/customizr.3.3.23.zip. If you need the version 3.2.11 for example, you’ll be able to download it from : https://downloads.wordpress.org/theme/customizr.3.2.11.zip.
Customizr Pro changelog
The Customizr Pro changelog is available here.