Add new spacer component

[acezard]

Suggesting a component used for accurate vertical spacing.

It would be used that way : <spacer size="10"></spacer> and generates a battle-tested
<table class="spacer"><tbody><tr><td height="10px" style="font-size:10px;mso-line-height-rule: exactly;line-height:10px;">&nbsp;</td></tr></tbody></table>

I feel this kind of component can be helpful in the framework because it allows an easy way of managing padding/margins without ever using them (usually unreliable on outlook). For instance it's very nice to make separations between blocks (even with different background colors), or even between elements in a single column.

I will make a pr to the foundation for emails repo because a css rule is also needed (100% width)

[gakimball]

If there's CSS that needs to be added to Foundation for Emails, then can we add all the CSS you've got in the style attribute? That way we keep Inky's HTML output cleaner.

[acezard]

It's possible. The only issue is that the user sets himself the height of the spacer element with the size attribute directly in the element attribute. Instead, I think it would be possible to create defaut css classes like "space-md", "space-lg", or allow the user to create custom classes if he knows what properties to target. I was under the impression that it might be less user-friendly, what are your thoughts ?

[gakimball]

@acezard Oh, I'm sorry, I was totally blind to that :) Makes total sense.

Need to do a bit more internal review with the team and then we can bring this in. Thanks again!

[rafibomb]

We like the way you have it @acezard ! I'll be testing it this week to bring it in. Thanks!

[gakimball]

@acezard Can you put together a unit test for this new component? We'll need that before we can merge. It would go under test/components.js.

[acezard]

I added an unit test and also removed an unnecessary inline css property (I put it directly into the css instead. Not sure if that rule is really necessary though but it was suggested to me on the initial issue foundation/foundation-emails#289).

[gakimball]

Awesome, thank you!

[rafibomb]

@acezard Shoot us an email with your address for some Yeti stickers! foundation at zurb .com

[rafibomb]

@acezard Just wanted to make sure I didn't miss your email, did you have a chance to send it?

[acezard]

@rafibomb oh, yea I did send it about the time you posted the previous message ! maybe I made a mistake ? my email adress is my github username @gmail.com