Edit CHANGELOG prior to release

CHANGELOG.md

@@ -6,6 +6,15 @@ 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).
 
 ## [Unreleased]
+### Fixed
+### Added
+### Changed
+### Removed
+### Deprecated
+
+
+## [1.3.0] - 2024-05-07
+
 ### Fixed
 
 - Set the reaction rates for certain ICE and NAT and STS reactions to zero when HCl < min-concentation; this helps prevent HCl problems.
@@ -26,9 +35,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Now automatically scale CH2Br2 emissions by 1.8, when using the HFC+S mechanism, to account for missing Br
 - Changed the tolerance for the SMV Gear solver; this helps with convergence
 
-### Removed
-### Deprecated
-
 
 ## [1.2.0] - 2023-12-07