Added ROADMAP
Start of Stackage2: CorePackages
ProposedPlan
PackageIndex
getLatestDescriptions
PackageConstraints rename
Horribly messy BuildPlan
GithubPings
Fix some reversed logic
Start using a sandbox
PackageDescription module, first stab
Remove unneeded debugging line
Correct discovery of build tools deps
Added CheckBuildPlan
Proper conditional tracking
Better flags serialization
Don't serialize global flags (package flags has all necessary information)
Merge remote-tracking branch 'origin/master' into stackage2
Nicer intersect
More comprehensive test/benchmark skipping