Looks like the newly provided reference package.json is incorrect in the post on github. Even ionic-angular is not set to 3.4. I also seem to have newer versions of some of the others.
Also note that there is a breaking change introduced with this one!
We moved ltr selectors to be under [dir="ltr"]. To disable it and keep stuff unchanged, set $app-direction: ltr.
See http://blog.ionic.io/ionic-and-rtl/ for more details.