v6.3.12

• feat(tabbar): allow tabbar to have highlight in iOS theme with extra tabbar-highlight class

• fix(popup): add pointer-events: none to popup-behind state

• fix(calendar): remove 日 char from calendar days for Chinese locale

  fixes #3960

• Merge branch 'master' of https://github.com/framework7io/framework7

• 6.3.12 release