Multiple email addresses and clickable mailto: links

[j-bmn]

This makes two changes to the handling of email addresses:

• Email addresses may be specified as a list, instead of one single address.
  This is entirely optional, everything will still render correctly if only one address is specified (without list syntax).

• Email addresses will be rendered as mailto: links, so that clicking them will open the default email client (if set).

For an example of the result, feel free to take a look at jonathan.baumann.cv ;)

[TheoWinterhalter]

Thanks for the PR. I'm not sure about this one: I don't think it makes sense to advertise several email addresses, this is confusing. Ideally you tell people how to reach you, they shouldn't have to guess.

It's perfectly fine to have on your own version of course. As for the mailto link, I'm on the fence, which to me suggests that perhaps there should be an option to make it a link or not?

What do you think?

[TheoWinterhalter]

I guess it doesn't hurt to support several emails, so if you make it optional to have the mailto link, I will merge.

[j-bmn]

Hi!
Sorry, it took me a while to get around to it, despite it being a really small change.

I decided to name the field clickable-email, but that can of course be changed if you prefer a different name.

[TheoWinterhalter]

Just a nit and we're done. Thanks!