package: Update debug and gnode

- debug@2 uses `stderr` again, so we may as well use the latest version
- gnode@0.1 compensates for its upstream dependency (regenerator)'s api
change
Merge pull request #45 from stephenmathieson/deps/update-gnode-and-debug

package: Update debug and gnode
added: optional authentication
Release 0.5.0
lazy-load request
Release 0.5.1
lib: Fix Bearer auth in #options()
Merge pull request #48 from stephenmathieson/fix/options-bearer

lib: Fix Bearer auth in #options()