keep css class order

[nha]

Considering that class order matters in css, I was expecting the following sablono fragment :

[:div.ui.middle.aligned.center.aligned.grid]

To render to the following :

class="ui middle aligned center aligned grid"

But instead I got :

class="aligned center grid middle ui"

Of course I can still use :className as a workaround, but it would be nice to keep the order.

[r0man]

@nha Are you sure the order of the css classes on an attribute matters?
I found this, which says the order in the CSS file matters.
http://stackoverflow.com/questions/1321692/how-to-specifiy-the-order-of-css-classes

That said, I'm open to a change that keeps the order of classes. Right now sablono uses a set to store the class name. We could change this to a vector.

Patch welcome!

[nha]

@roman Quite sure, it just happened to me.

Maybe if I find time, would you direct me towards the relevant lines ?

[r0man]

@nha I think most of the set stuff is in the normalize namespace. See:
https://github.com/r0man/sablono/blob/master/src/sablono/normalize.cljc#L68

[r0man]

Fixed in master