3.15.0

When converting from Nuget Paket removes NuGetPackageImportStamp - #1865
BUGFIX: Fixed strange issue during directory cleanup
BUGFIX: Fallback to LocalApplicationData if we don't have UserProfile avaulable - #1863
BUGFIX: Fixed octokit parsing - #1867
BUGFIX: Faulty conditions were generated when using condition attributes - #1860