toggle only items that really changed selection in multi mode

[reinert]

Fixes #75

[bicknellr]

Thanks for sending this PR; awesome tests! PTAL at the comments.

[reinert]

Sorry for the delay. It's been a while and I needed to schedule a time to review it.

Thanks for appreciating the PR. I tried to follow your recommendations, except the first, which I stuck to the pattern already present at the code.

If you feel the bind is really beneficial to the code, I can change it too.

Thanks for your time.

[reinert]

Using MockInteractions on tests broke the patch. Some exception is occurring. Locally in my machine it is working fine. Do you know any reason why is that?

[reinert]

Checking master code, I saw sometimes using CustomEvent, other MockInteractions.

The difference is that MockInteractions is always used wrapping the source element with Polymer like MockInteractions.tap(Polymer.dom(s).children[0]). Is that trick mandatory?

CustomEvent example MockInteractions example

[reinert]

Oh! After merging locally this patch with master I realized this failure is already present on master. So it's not an issue here.

[bicknellr]

Left a comment. Also, #108 should fix the test, so once that's in you'll need to rebase to see it reflected here.

[bicknellr]

108 is in, could you rebase?

[reinert]

Done.

[bicknellr]

LGTM, thanks again!

[reinert]

Thanks for reviewing the PR. You guys are doing an amazing job with the polymer project. My codes were never so beautiful. I'm definitely in love with it.

[bicknellr]

:)