Treat target as binary when unpacking gzip-only archives
Combine attr declarations
Decouple Resource from SoftwareSpec
SoftwareSpec tests are now Resource tests
Reimplement SoftwareSpec on top of Resource
Move formula resources to SoftwareSpec
Track initialized specs
Make top-level resources apply to all specs
Make spec-scoped resources override top-level resources
Download strategies take a resource now
Reorganize resource download methods
More useful error message for missing checksums
scala: use resources
git-flow: use resources
git-flow-avh: use resources
netcdf: use resources
docbook: use resources
Allow partial installation of resources
erlang: use resources