Merge branch 'canary' into master (#711)

* refactor(i18n): simplify the structure of the translation file

* chore: prepare repository for v4.0.0-alpha

* chore: modify go.mod to v4

* refactor: migrate theme configuration to TOML

* fix: exampleSite not using correct theme

* feat: add favicon from assets folder

* refactor: drop linear grandient background feature

remove node-vibrant from dependencies

* feat: use Hugo's code block render hook to implement code copy button

Now it can have i18n support

* refactor: delete color.ts

* refactor: delete Emoji support post from example site

* refactor: drop support for `hidden` field in front matter

* feat: upgrade to PhotoSwipe v5

* chore: bump the required hugo version to 0.100.0

* refactor: remove PhotoSwipe from external.yaml

* fix: extra margin in search result

* fix: incorrect markdown heading level in example site

* refactor: remove some usages of `default` in template

No longer needed thanks to Hugo's configuration merge

* fix: one line codeblock style in firefox

closes https://github.com/CaiJimmy/hugo-theme-stack/issues/564

* feat: add style to new codeblock

* feat: i18n support for codeblock copy text

* fix(menu): jitter when closing menu

It's caused by flexbox gap property, which can't animate

* fix(search): long text overflows under the Search icon

closes https://github.com/CaiJimmy/hugo-theme-stack/issues/515

i18n/ja.yaml

@@ -1,60 +1,32 @@
-toggleMenu:
-    other: メニューを開く・閉じる
+toggleMenu: メニューを開く・閉じる
 
-darkMode:
-    other: ダークモード
+darkMode: ダークモード
 
 article:
-    back:
-        other: 前のページ
-
-    tableOfContents:
-        other: 目次
-
-    relatedContent:
-        other: 関連するコンテンツ
-
-    lastUpdatedOn:
-        other: 最終更新
-
-    readingTime:
-        other: "読了時間: {{ .Count }}分"
+    back: 前のページ
+    tableOfContents: 目次
+    relatedContent: 関連するコンテンツ
+    lastUpdatedOn: 最終更新
+    readingTime: "読了時間: {{ .Count }}分"
 
 notFound:
-    title:
-        other: 404 Not Found
-    subtitle:
-        other: 指定されたページは存在しません。
+    title: 404 Not Found
+    subtitle: 指定されたページは存在しません。
 
 widget:
     archives:
-        title:
-            other: アーカイブ
-
-        more:
-            other: さらに見る
-
+        title: アーカイブ
+        more: さらに見る
     tagCloud:
-        title:
-            other: タグ
-
+        title: タグ
     categoriesCloud:
-        title:
-            other: カテゴリ
+        title: カテゴリ
 
 search:
-    title:
-        other: 検索
-
-    placeholder:
-        other: 入力...
-
-    resultTitle:
-        other: "#PAGES_COUNT 件 （#TIME_SECONDS 秒）"
+    title: 検索
+    placeholder: 入力...
+    resultTitle: "#PAGES_COUNT 件 （#TIME_SECONDS 秒）"
 
 footer:
-    builtWith:
-        other: Built with {{ .Generator }}
-
-    designedBy:
-        other: テーマ {{ .Theme }} は {{ .DesignedBy }} によって設計されています。
+    builtWith: Built with {{ .Generator }}
+    designedBy: テーマ {{ .Theme }} は {{ .DesignedBy }} によって設計されています。