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/de.yaml

@@ -1,74 +1,43 @@
-toggleMenu:
-    other: Menü umschalten
+toggleMenu: Menü umschalten
 
-darkMode:
-    other: Dunkler Modus
+darkMode: Dunkler Modus
 
 list:
     page:
         one: "{{ .Count }} Seite"
         other: "{{ .Count }} Seiten"
-
-    section:
-        other: Abschnitt
-
+    section: Abschnitt
     subsection:
         one: Unterabschnitt
         other: Unterabschnitte
 
 article:
-    back:
-        other: Zurück
-
-    tableOfContents:
-        other: Inhaltsverzeichnis
-
-    relatedContent:
-        other: Verwandte Inhalte
-
-    lastUpdatedOn:
-        other: Zuletzt aktualisiert am
-
+    back: Zurück
+    tableOfContents: Inhaltsverzeichnis
+    relatedContent: Verwandte Inhalte
+    lastUpdatedOn: Zuletzt aktualisiert am
     readingTime:
         one: "{{ .Count }} Minute Lesezeit"
         other: "{{ .Count }} Minuten Lesezeit"
 
 notFound:
-    title:
-        other: Seite nicht gefunden
-
-    subtitle:
-        other: Diese Seite existiert nicht
+    title: Seite nicht gefunden
+    subtitle: Diese Seite existiert nicht
 
 widget:
     archives:
-        title:
-            other: Archiv
-
-        more:
-            other: Weitere
-
+        title: Archiv
+        more: Weitere
     tagCloud:
-        title:
-            other: Schlagwörter
-
+        title: Schlagwörter
     categoriesCloud:
-        title:
-            other: Kategorien
+        title: Kategorien
 
 search:
-    title:
-        other: Suche
-
-    placeholder:
-        other: Etwas tippen...
-
-    resultTitle:
-        other: "#PAGES_COUNT Seiten (#TIME_SECONDS Sekunden)"
+    title: Suche
+    placeholder: Etwas tippen...
+    resultTitle: "#PAGES_COUNT Seiten (#TIME_SECONDS Sekunden)"
 
 footer:
-    builtWith:
-        other: Erstellt mit {{ .Generator }}
-
-    designedBy:
-        other: Theme {{ .Theme }} gestaltet von {{ .DesignedBy }}
+    builtWith: Erstellt mit {{ .Generator }}
+    designedBy: Theme {{ .Theme }} gestaltet von {{ .DesignedBy }}