* update changelog

Author: imfx77

changelog.md

@@ -1,8 +1,19 @@
 # Changelog
 
 
+## v0.5.2
+
+_(most recent changes are listed on top):_
+- Multiple corrections to README, INSTALL, changelog and Screenshots
+- Refactoring for vendors and correct attributing of their licences
+
 ## v0.5.1
 
+_(most recent changes are listed on top):_
+- README, changelog and author fixes
+
+## v0.5.0
+
 _(most recent changes are listed on top):_
 - Preliminary release for troubleshooting purposes
 - Intended initial editing functionality and settings are present and working