Issue #15: Support Toastr newestOnTop configuration option

[bvaughn]

No description provided.

[Foxandxss]

I need to research more.

I didn't include this option at first because there was a limitation on $animate.enter and technically it would allow append and prepend with the time.

I need to research if there is a cleaner way to fix it, and if not, check yours, but so far it doesn't have any test and it broke a few.

[bvaughn]

Oh, my bad for breaking the build. I didn't anticipate that change to impact anything since it was (I thought) fully backwards compatible.

I would be happy to update the tests to fix the break, if you'd consider this addition. If you'd rather not add this feature I won't bother. Just let me know! :)

[Foxandxss]

I do want the feature, it is on my todo list (issue #1) but I need to find the best way that could be native $animate.enter support or your PR.

[Foxandxss]

It is really really easy to do on 1.3 with $animate, so I am not sure if I backport that, workaround that or leave it for 1.3 only.

I need to think :P

[Foxandxss]

For what is worth, your patch is not working for me:

[Foxandxss]

I am going to close this PR because it was brokish.

On the other hand, now that I decided to remove 1.2 support, I am going to implement this on the new version.