优化

app/src/main/java/io/legado/app/data/AppDatabase.kt

@@ -17,7 +17,7 @@ import kotlinx.coroutines.launch
     entities = [Book::class, BookGroup::class, BookSource::class, BookChapter::class,
         ReplaceRule::class, SearchBook::class, SearchKeyword::class, Cookie::class,
         RssSource::class, Bookmark::class, RssArticle::class, RssStar::class, TxtTocRule::class],
-    version = 6,
+    version = 7,
     exportSchema = true
 )
 abstract class AppDatabase : RoomDatabase() {