Merge branch 'release_0803' into 'main'

Update changelog in preparation for release

See merge request !21

CHANGELOG.md

@@ -4,7 +4,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/usgs/waterdataui/compare/waterdataui-0.48.0...master)
+## [Unreleased](https://github.com/usgs/waterdataui/compare/waterdataui-0.49.0...master)
+
+## [0.49.0](https://github.com/usgs/waterdataui/compare/waterdataui-0.48.0...waterdataui-0.49.0) - 2021-08-03
 ### Changed
 - Reorganized header navigation including changing labels and adding links to twitter, instagram, and data visualizations.
 - Groundwater accordion only shows on locations with site type 'GW'.