feat: add target to Link

[adoyle0]

Adds target attribute to the <a> tag created by Link.

I wanted this for my app and noticed it didn't exist (among other attributes) so I thought I'd just add it :)

[luoxiaozero]

You can add it via the attr: syntax, for example:

<Link href="http://example.com" attr:target="_blank">
     "This is a link"
</Link>

[adoyle0]

Ah that's what I was looking for. I didn't realize it existed