update changelog

Author: lfoppiano

CHANGELOG.md

@@ -4,6 +4,24 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [0.0.5]
+
+### Added
++ Add legacy PDF document visualisation (`<embed>` or `<iframe>`) #20
+
+
+## [0.0.4]
+
+### Added 
++ Added parameter to choose the thickness of the PDF annotations #14
++ Added parameter to choose the vertical spacing between pages #15
+
+### Changed 
++ Improved validation of width and height parameters #18
+
+### Fixed
++ Fixed misalignment when the pages have different dimentions #17
+
 
 ## [0.0.2]