update: Release 8.21

Author: love-linger

data/version.json

@@ -1,5 +1,5 @@
 {
-    "tag_name": "v8.20",
-    "name": "Release 8.20",
-    "body": "# What's Changed\r\n\r\n* Move settings of repository, such as filters, commit message, from `Preference` to each repository's gitdir.\r\n* Stores last choice for some operations.\r\n* Better LFS file detection in revsion files.\r\n* Enhanced custom theme support.\r\n* Add a option to skip tags while fetching/pulling from remote.\r\n* Add tooltip for branch node to see the full name of branch.\r\n* Rewrite `Ctrl+V` command of commit subject input box.\r\n* Fix timezone issue for committer/author time of commit.\r\n* Fix the issue that deleting a local branch with invalid upstream will crash the application.\r\n* Supports install via `winget install SourceGit`.\r\n* Provide AppImage package for Linux.\r\n* Redesign the layout of left sidebar in repository dashboard page. \r\n* Rewrite a faster and virtualized branch tree.\r\n* Several UX/Theme changes.\r\n\r\n**Full Changelog**: https://github.com/sourcegit-scm/sourcegit/compare/v8.19...v8.20"
+    "tag_name": "v8.21",
+    "name": "Release 8.21",
+    "body": "## What's Changed\r\n\r\n* Rewrite the implementation of theme overrides.\r\n* Built-in SSH askpass client.\r\n* Built-in `core.editor` support.\r\n* Commit searching now will running background.\r\n* Refresh working copy changes immediately after discard complete.\r\n* Supports to resize width of columns (`Graph & Subject` and `Author`) in histories view.\r\n* Fix the issue that `Ctrl+V` on subject text box will trigger input text twice.\r\n* Fix the issue that sometimes commits not marked as merged.\r\n* Replace `TreeDataGrid` with custom tree view and remove this dependency.\r\n* Enhanced commit search.\r\n\r\n**Full Changelog**: https://github.com/sourcegit-scm/sourcegit/compare/v8.20...v8.21"
 }