Trying to update to traceur 0.0.66

The Node API has significantly changed, see the following discussions:
https://github.com/google/traceur-compiler/issues/1209
https://github.com/google/traceur-compiler/issues/1233

Not sure how to handle errors (we use to have `output.errors`).

Tests do not pass.

Also use the new (Meteor 0.9.3) versioning convention for wrapper
packages, `x.y.z_n` where `x.y.z` is the semversion of the wrapped
package and `n` is the incremental version of the wrapper itself.