chore(package): update babel-core to version 6.13.0 (#928)
chore(package): update babel-core to version 6.13.0 (#928)

https://greenkeeper.io/
bgrins/tofino,jsantell/tofino,victorporof/tofino,victorporof/tofino,mozilla/tofino,mozilla/tofino,bgrins/tofino,bgrins/tofino,bgrins/tofino,jsantell/tofino,jsantell/tofino,jsantell/tofino,mozilla/tofino,mozilla/tofino