Fix broken EF migrations in dev.
Widen the statistics table Operation column so it can handle Install-Dependency operation.
Support logging the NuGet-DependentPackage and NuGet-ProjectGuids headers in package statistics. Contains migration to add new columns to PackageStatistics.
Merge pull request #1197 from NuGet/tilovell-1196-newClientHeaders

Add request for new client headers and widen the Operation column