v2.0.0-beta.3

Fixes

• allow finding components nested in <slot> with findComponent #184 @Jokcy
• add warning when attempting to called emitted on functional components 09ea371 @lmiller1990
• fix bug where error is thrown when unmounting app with fragment as base component #182 @JeremyWuuuuu
• change plugins API from object to array to support arbitrary options f507480 @leo Zurbriggen