README.md in format_parser-1.3.0 vs README.md in format_parser-1.4.0

@@ -31,10 +31,11 @@
 * ZIP
 * DOCX, PPTX, XLSX
 * OGG
 * MPEG, MPG
 * M3U
+* WEBP
 
 ...with [more](https://github.com/WeTransfer/format_parser/issues?q=is%3Aissue+is%3Aopen+label%3Aformats) on the way!
 
 ## Basic usage
 
@@ -195,9 +196,13 @@
   manipulated using the [https://github.com/recurser/exif-orientation-examples](exif-orientation-examples)
   script.
 
 ### M3U
 - The M3U fixture files were created by one of the project maintainers
+
+### WEBP
+- With the exception of extended-animation.webp, which was obtained from Wikimedia Commons and is Creative Commons 
+licensed, all of the WebP fixture files have been created by one of the project maintainers.
 
 ### .key
 - The `keynote_recognized_as_jpeg.key` file was created by the project maintainers
 
 ## Copyright