Bug Fixes

• core: don't proceed lazy if swiper destroyed (4ea0102), closes #6322
• core: fix loop handling with virtual (69462d2), closes #6343
• element: fix converting boolean/string params to module object (192e0d4), closes #6328
• navigation: allow multiple classes in navigation options (#6345) (ca49b9f), closes #6344
• thumbs: ensure there is a slide to add a class (c6294ad), closes #6335

Features

• history: allow empty string key (a335b09), closes #6338