Small sizing and spacing tweaks

src/view/com/composer/ComposePost.tsx

@@ -249,6 +249,6 @@ const styles = StyleSheet.create({
   textInput: {
     flex: 1,
     padding: 5,
-    fontSize: 18,
+    fontSize: 21,
   },
 })

src/view/com/notifications/FeedItem.tsx

@@ -124,7 +124,7 @@ export const FeedItem = observer(function FeedItem({
           <View style={styles.avis}>
             {authors.slice(0, MAX_AUTHORS).map(author => (
               <Link
-                style={s.mr2}
+                style={{marginRight: 3}}
                 key={author.href}
                 href={author.href}
                 title={`@${author.handle}`}>