Emulate scroll :target

[daun]

Description

• Emulate native :target selector that stops working when updating URLs via History API
• Introduce a setting markScrollTarget to mark targets with a data-swup-scroll-target attribute
• Waiting on PR #772 on the core to work properly

Checks

• The PR is submitted to the master branch
• The code was linted before pushing (npm run lint)
• The documentation was updated as required

Additional information

Closes #53

[hirasso]

Did you test the exact native behavior of :target? If I recall correctly, the selector is not being applied if clicking on an anchor link that scrolls on the same page. It's only applied if visiting a page with a hash anchor directly, doesn't it?

I'm only on mobile so I can't properly test it right now 😩😉

[daun]

@hirasso As far as I know, :target gets updated whenever the URL changes, which also happens when jumping between anchors on the same page.