Ignore failing test in .NET Core

Merge branch 'hotfix/3.0.8' into support/3.0

Merge branch 'hotfix/3.1.3'

Merge branch 'hotfix/3.1.2'

Bump version to 3.1.1

Set version to 3.1.0

Update project.json to latest format

Reacting to aspnet/Announcements#175

Merge branch 'hotfix/3.0.7'

Merge branch 'hotfix/3.0.6'

Merge branch 'hotfix/3.0.5'