Fix rst
Begin to document settings
Simplify changelog
Update doc structure
Manifesto => introduction
Document settings and most shorthand
Rename DIY file
full() resets margins when using isolation
Merge pull request #257 from tsi/susy-next

full() resets margins when using isolation
Draft documents for settings and shorthand
Update changelog
Fix typos in intro
Update ag full output
Dont output 0 gutters unless they are an override
Allow gutters and container-position to be unset with null
Update changelog
Remove references to language module from math module
Organize into distinct math/api/language layers
Update changelog
Fix background-image bug for bourbon