Added updated Looker model and support SQL table of geographic / country references
Added updated LookML models
Updated LookML models to latest version, including new filename conventions
Updated changelog with steps from this release
Updated SQL to be Postgres (rather than Redshift) compatible
Updated filenames _ -> -
Little clean-up
Update CHANGELOG
Split country_codes into 2 tasks
Typo
Merge remote-tracking branch 'origin/looker_upgrade' into develop
Merge branch 'develop'