15.1.1

Bug Fixes

• accordion: override destroyOnHide correctly (#4545) (e0f15c6), closes #4541
• dropdown: fix arrow navigation inside shadow dom (#4548) (995d22d), closes #4540
• scrollspy: change active to '' (empty) after explicit stop (cec803d)
• scrollspy: recompute active when unobserving fragments (4dac691)