Escape colon in tag names

[vwochnik]

This fixes an issue where the tag name includes a :. In this case, an exception is thrown. This solution escapes the colon so the querySelector* methods work again.

I have tried writing a test, but it doesn't work, because the behaviour of jsdom is not browser-compilant. However, it works in the browsers I have tested it in.

[AvraamMavridis]

@vwochnik Can you please add a test for this case?

[vwochnik]

No, not possible. For this, we'd need to move the tests to use PhantomJS. The jsdom engine behaves differently from browsers in this specific case.

[vwochnik]

Do you want me to port this to use PhantomJS?

[AvraamMavridis]

@vwochnik It would be nice, or maybe mock the jsdom implementation.

[vwochnik]

I would have to change the querySelector* methods there, that's too much effort. OK, I will change the build system to use Karma/Jasmine/PhantomJS then. But you agree to merge the change then? Should I also upgrade the build pipeline?

[AvraamMavridis]

@vwochnik Thats too much effort too, maybe can be a separate PR/issue. I will merge this one, and I will push to npm. Give me some hours because I am on the way. And thx for the PR :)

[vwochnik]

OK. If my boss agrees I would love to upgrade your build system for a test to be written for this case. Thanks for merging anyways! I'm awaiting the new version then.