sort out usage and allow a plugin argument
support min version
move rhino to its own folder
use a sourcemap builder for sourcemap output, seperated from the other less options
initial work to allow post process plugins to work with sourcemaps
change render and tree to return an object containing css and map and in the future possibly other things
Do not require users to construct a source map builder
Fix the sourcemap options to default to the correct directories
simplify sourcemapfilename in lessc and expose the output filename
make the import manager one instance per render
remove env from all environment calls except the ones that actually need it
Add another todo
Fix browser if no less object specified
import managaer related simplifications
move some contexts into the import manager
further simplifications to the parse context
Fix interpolated selector match regression