Hover inspector like in Zeplin , Figma

Extension behavior closed like in Zeplin, Figma.

version 3.0.2
- fix bug: prevent click(thanks Marcelo Alejandro)
- add background rule permission for save setting

version 3.0.1
- fix bug: extension dropped (thanks @invisioN7)

version 3.0.0
- refactor core(prepare for the new features)
- add sidebar (setting, more details of selected element)
- add freezing selected element after 2 click
- press 'space' for unfreeze selected element
- add link to discord
- add uninstall form
- fixed calculation position of popup

version 2.0.0
- used ReactJS (expected simplifying of maintain and support)
- add data: padding, margin, font, color, background, line-height, class, id
- fixed calculation position of popup

version 1.1.0
- add highline padding(green color) and margin(orange color).
- fix bugs

version 1.0.5.1
- minify file for more faster loading

version 1.0.5
- add top bar with styles(padding, margin, font-size, height, width) for hover and selected element
- fixed bugs (when user scroll label and lines position not display correctly)
- add change style for label which display height and width hovered element
- change active and regular icon:
- add 2 hotkeys:
-- command + enter / ctrl + enter - for hide/show topbar
-- esc for close extension

version 1.0.4
- add functionality when start scroll
- change color of labels
- add dimension calculating when selected located in hovered element

version 1.0.3
- add dimension calculating when hovered located outside selected element