Add post v0.4 updates to the CHANGELOG

Used prior updates as a basis for what changes to include and phrasing.

CHANGELOG.md

@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+- Replaced lazy_static dependency with once_cell
+- Improved documentation of the `html_reports` feature
+- Replaced atty dependency with is-terminal
+- (WIP, waiting on #679) MSRV bumped to 1.64
+- (WIP, waiting on #679) Upgraded clap dependency to v4
+
+### Fixed
+- Quick mode (`--quick`) no longer outputs 1ms for measured times over 5 seconds
+- Documentation updates
+
 ## [0.4.0] - 2022-09-10
 
 ### Removed