Update Changelog.md

Author: i-make-robots

Changelog.md

@@ -7,6 +7,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## 7.78.4
+
+### Fixed
+- MickeyMoe1992 now properly obeys the margin limits, same as the other converters.
+- Render hints are now forced to enable antialiasing, etc.
+
+## 7.78.3
+
+### Added
+- Added Generator "Registration Marks"
+- Added "Zoom to fit machine"
+
+### Removed 
+- Hid the Donatello panel at startup for a less confusing new user experience.
+
 ## 7.78.0
 
 ### Added