A lot of changes

Remove unused constructor of messages::Message
Fixed LimitedQueueSnapshot _-prefixes
Changed LimitedQueueSnapshot's usage of int to std::size_t
ColorScheme is no longer a singleton
Created a "BaseWidget" class which is pretty much a QWidget except it
has a reference of ColorScheme since most widgets will need a reference
to the style they should use.
BaseWidget can be implemented either with a BaseWidget parent (which
will copy the ColorScheme reference from the parent) or with a
normal QWidget parent and an explicit ColorScheme reference.
Save main window geometry on close
Fix font changing in the Settings Dialog
Update settings library version

src/emojis.hpp

@@ -11,33 +11,18 @@
 
 namespace chatterino {
 
+struct EmojiData {
+    QString value;
+    QString code;
+};
+
 class Emojis
 {
 public:
-    static void parseEmojis(std::vector<std::tuple<messages::LazyLoadedImage *, QString>> &vector,
-                            const QString &text);
-
-    static void loadEmojis();
-
     static QString replaceShortCodes(const QString &text);
 
-    struct EmojiData {
-        QString value;
-        QString code;
-    };
-
 private:
     static QRegularExpression findShortCodesRegex;
-
-    static QMap<QString, EmojiData> shortCodeToEmoji;
-    static QMap<QString, QString> emojiToShortCode;
-    static QMap<QChar, QMap<QString, QString>> firstEmojiChars;
-
-    static ConcurrentMap<QString, messages::LazyLoadedImage *> imageCache;
-
-    Emojis()
-    {
-    }
 };
 
 }  // namespace chatterino