Update version and changelog for release (#2138)

Author: github-actions[bot]

CHANGELOG.md

@@ -2,6 +2,17 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.3.15] - 2022-08-03
+
+### 🚀 New Features and Enhancements
+
+- Hide remove all buttons from trees when there is nothing to remove [#2131](https://github.com/iterative/vscode-dvc/pull/2131) by [@mattseddon](https://github.com/mattseddon)
+- Plot experiments in the order they were selected [#2137](https://github.com/iterative/vscode-dvc/pull/2137) by [@mattseddon](https://github.com/mattseddon)
+
+### 🔨 Maintenance
+
+- Update CODEOWNERS [#2132](https://github.com/iterative/vscode-dvc/pull/2132) by [@mattseddon](https://github.com/mattseddon)
+
 ## [0.3.14] - 2022-08-02
 
 ### 🐛 Bug Fixes

extension/package.json

@@ -9,7 +9,7 @@
   "extensionDependencies": [
     "vscode.git"
   ],
-  "version": "0.3.14",
+  "version": "0.3.15",
   "license": "Apache-2.0",
   "readme": "./README.md",
   "repository": {