removing spaces
scientific notation should not have extra spaces

 - bumping patchlevel to 1.3.1
 - tests are updated and still pass
Merge pull request #19 from HubSpot/compactIntegerPatch

Compact integer patch fixes #18
update docs with new scientific notation format
Merge branch 'master' of github.com:HubSpot/humanize
Merge pull request #20 from HubSpot/documentationfix

Documentationfix
Merge branch 'master' into hyphentitlecase