Updated CHANGELOG.md for GCPy 0.1.1

Added relevant info for the GCPY 0.1.1 release.

Signed-off-by: Bob Yantosca <[email protected]>

CHANGELOG.md

@@ -4,16 +4,30 @@ All notable changes to GCPy will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## 0.1.1 - 2020-02-28
+## [Unreleased]
 
 ### Added
 
-- This CHANGELOG file to track notable changes in GCPy.
-
 ### Changed
 
+### Deprecated
+
 ### Fixed
 
+### Removed
+
+## [0.1.1] - 2020-02-28
+
+### Added
+
+- This CHANGELOG file to track notable changes in GCPy.
+
+### Changed
+- Pb210, Be7, and Be10 species are now added to species_database.yml.
+- gcpy/budget_aer.py and gcpy/budget_tt.py now get molecular weights from species_database.yml.
+- Updated the value of MW_AIR in constants.py to add more precision.
+- gcpy/benchmark.py now writes OH metrics output to the Plots/Tables folder.
+- Updated CHANGELOG.md for 0.1.1.
 
 ## [0.1.0] - 2020-02-26
 
@@ -25,6 +39,3 @@ This is the first labeled version of GCPy. The primary functionality of GCPy is
 - Support for plotting benchmark output for both GEOS-Chem Classic (lat/lon data) and GCHP (cubed-sphere data).
 
 The first official release version of GCPy, v1.0.0, will correspond with the release of GEOS-Chem 13.0.0.
-
-
-[0.1.0]: https://github.com/geoschem/gcpy/releases/tag/v0.1.0