new feature, tracks now changes to groups, see #10
unused imports
#10 working partially, will only issue a recompile of all groups if input files changed. Need to implement something that will only recompile specific groups
removed debug command
now only recompiles modified input file groups
updating version
make cache folder configurable
upgrading to scala 2.10.0
upgrading to scala 2.9.2
Upgrading to wro4j 1.6.3, removed deprecated classes
fixed travis build