Add release changelog

CHANGELOG.md

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+# What's New
+The Overture Explorer Site is an open source project. You can submit bug reports, help out, or learn more by visiting our project page on GitHub: :octocat: https://github.com/OvertureMaps/io-site
+
+Please star our project on GitHub to show your support! ⭐️
+
+<!--
+# A.B.C
+##### YYYY-MMM-DD
+
+#### :newspaper: News
+#### :mega: Release Highlights
+#### :boom: Breaking Changes
+#### :tada: New Features
+#### :sparkles: Usability & Accessibility
+#### :scissors: Operations
+#### :camera: Street-Level
+#### :white_check_mark: Validation
+#### :bug: Bugfixes
+#### :earth_asia: Localization
+#### :hammer: Development
+#### :hourglass: Performance
+#### :mortar_board: Walkthrough / Help
+#### :rocket: Presets
+#### :popcorn: OSM
+###### New Presets
+###### Changed Presets
+###### New and Changed Fields
+
+[#xxxx]: https://github.com/OvertureMaps/io-site/issues/xxxx
+[@xxxx]: https://github.com/xxxx
+-->
+# [1.0.0-beta.2](https://github.com/OvertureMaps/io-site/releases/tag/v1.0.0-beta.2)
+#### 2024-Aug-28
+
+Many thanks to [@eti7075] for all his hard work on the site during the summer! 
+
+#### :tada:New Features
+* [#133] [#108] [#129] The theme selector control now has themes *and* types, with the ability to enable/disable and pin/unpin each. Pinning a theme or type accentuates its styling to make it easier to see.
+* [#131] We've made a complete style pass, adjusting colors and color saturation of map entities to make things look a lot less 'busy'. 
+* [#89] We added a new Navigator control that allows the user to visit several places on the globe, with different theme styling as appropriate for each place of interest. 
+* [#147] We've updated the data to show the 2024-08-20 release
+
+#### :bug: Bugfixes:
+  * [#92] The geoparquet data release has been fixed to include some missing building:part ways in NYC
+  * [#114] Added a close button to the download disablement pop-up
+  * [#111] Updated the intro/guided tour to explain the new 'pin' functionality 
+  * [#105] Added a 'beta' label to the site header
+  * [#150],[#147] Adjusted the case of GitHub in tour tooltips
+
+
+[#151]: https://github.com/OvertureMaps/io-site/issues/151
+[#147]: https://github.com/OvertureMaps/io-site/issues/147
+[#133]: https://github.com/OvertureMaps/io-site/issues/133
+[#131]: https://github.com/OvertureMaps/io-site/issues/131
+[#114]: https://github.com/OvertureMaps/io-site/issues/114
+[#111]: https://github.com/OvertureMaps/io-site/issues/111
+[#105]: https://github.com/OvertureMaps/io-site/issues/105
+[#150]: https://github.com/OvertureMaps/io-site/issues/150
+[#108]: https://github.com/OvertureMaps/io-site/issues/108
+[#129]: https://github.com/OvertureMaps/io-site/issues/129
+[#89]: https://github.com/OvertureMaps/io-site/issues/89
+[#92]: https://github.com/OvertureMaps/io-site/issues/92
+[@eti7075]: https://github.com/eti7075
+
+
+# [1.0.0-beta.1](https://github.com/OvertureMaps/io-site/releases/tag/v1.0.0-beta.1)
+#### 2024-Jul-23
+* This was our initial announcement/release of the site, so no issues had been publicly shipped yet. 
+
+#### :tada: Initial Features
+* Theme Selector panel with the ability to enable/disable specific themes. 
+* Guided Tour of the page / controls for first-time users
+* Ability to submit issues for the page, data in the map, and data downloads.
+* Full 2d/3d map with the entire planet's worth of data in the June (and later July) releases.