Merge pull request microsoft#39 from AArnott/FixVarUseWarnings

Avoid `var` where type is not obvious

Merge pull request microsoft#29 from AArnott/pkgupdate

Update StyleCop.Analyzers

Merge pull request #20 from khoiph1/master

Loc checkin

Merge pull request #18 from Microsoft/dev/andarno/APTCA

Declare library to be SecurityTransparent

Merge pull request #16 from Microsoft/dev/andarno/MoreTests

Full code coverage

Fix copyright notice

Merge remote-tracking branch 'origin/v15.0'

Merge remote-tracking branch 'origin/v15.0'

Update nuspec to mention netstandard1.1

Use public signing in appveyor