angular v1.3 support

Hello, @fastfrwrd! Angular v1.3.0 was just released. And currently I can't run `bower install` w/o problems: it brings dependency conflict. Your package resolves `~1.2` to latest `1.2.x` and I have `1.3.0`. I think later others will face same thing too. I changed `~1.2` to `^1.2`, so it will be OK with angular `1.3.x`.

P.S.: if there is a way to limit only to 1.2.x and 1.3.x, that maybe would be more wise.