Update changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [7.0.5] - In progress...
+
+### Fixed
+
+  - Installation on macOS. This was failing because of differences in how the graphical sudo prompt affects file permissions between Linux and macOS.
+
 ## [7.0.4] - 2021-03-17
 
 ### Added