Update CHANGELOG.md

Author: Argmaster

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 NOTE: CSSFinder follows the [semver](https://semver.org/) versioning standard.
 
+### 0.8.0 - April 17, 2024
+
+- Added documentation with MkDocs. Documentation contains multiple guides for
+  new users and full autogenerated package reference.
+- Changed command line interface. Now `cssfinder project` commands no longer
+  auto-detect project as current working directory.
+- Added JSON report format.
+
 ### 0.7.0 - May 19, 2023
 
 - Added G3PaE3qD mode support.