* fix(popover): fix panel disappear when hover on panel
* popover: fix tabindex prop
* popover: fix popover directive
* add test case for popover
* tabindex prop does not specify a default value & update elpopover component docs
Co-authored-by: Ryan <ryanzhao2128@gmail.com>
* style(slider): slider button style change
slider button add box-sizing: border-box and change the default size to make sure the style is the
same of before.
* style(slider): remove outline
* fix(docs): replace error v-slot/slot to correct
Replace all `v-slot` to `#default`, `v-slot:xxx` to `#xxx`, `slot="xxx"` to `#xxx`.
fix#704
* docs: v-slot can not bind on div
* fix: fix v-slot
