Travis build is broken

[ashawley]

OpenJDK6 wouldn't work on Trusty. I rolled back to Precise in #271, but it didn't work entirely.

I predict this change at Travis is what bit us.

[ashawley]

We're under special obligation to support Java 6 and Scala.js, but may not be able to satisfy all requirements, so we may need to reconsider our obligation to Java 6.

There's a chance the Travis config could be made to work. There could probably be a way to maintain a fork that has a Travis that works with OpenJDK6 and one that supports new stuff.

[SethTisue]

fwiw, I'd be fine with dropping Java 6 support. I guess in a new 1.2.x series.

in the probably unlikely event that further PRs came in on on the 1.1.x branch for someone wanting a further 1.1.x release, we could consider it then.

[SethTisue]

#271 ended up fixing this completely, right?

[ashawley]

Yes, it did.