Remove trailing whitespace
Don't clone the repository if it is already cloned
Fix string interpolation
Fetch changes if we don't clone
Merge pull request #162 from travis-ci/hh-allow-pre-clone

Don't clone the repository if it's already cloned
Don't print the OAuth token when using tarball clone
allow for a custom api endpoint to be set for tarball downloads
update the tarball payload to match what is in core
Merge pull request #163 from travis-ci/hh-improve-tarball-download

Don't print the OAuth token when using tarball clone
use auth headers for oauth token auth

auth auth auth