No need to cache at levels < 9. Bump up cache timeout -- can manually delete if needed
Merge pull request #86 from cmc333333/modal-hmda

Give a modal explaining what the HMDA Explorer is
Merge pull request #87 from cmc333333/precache

Tweaks to precaching
Merge branch 'master' of https://github.com/cfpb/mapusaurus into modal-screenshot