Diamond operator isn't supported in older IDE's.

I don't see any real benefit in imposing the diamond operator -- Object<>() -- in the library. By not using it, the source code will NOT show as a syntax error in old IDE's (Google updated their IDE lately to support JDK 1.7, which is still behind the recent one anyway.)
Merge pull request #517 from orientalsensation/RemoveDiamonds

Diamond operator isn't supported in older IDE's.