Support for static member as the value of setting using ::

[tsimbalar]

This is the Serilog.Settings.Configuration transposition of serilog/serilog#1057 .

The idea is to support "Serilog.Sinks.SystemConsole.Themes.AnsiConsoleTheme::Grayscale" to access a static member for arguments of a complex type.

See details of issue in core Serilog repo to implement it in a consistent way.

This would help with serilog/serilog-sinks-console#16

[tsimbalar]

Merged in #77

[jp7677]

Thanks a lot! Could you consider to release a new version?

[tsimbalar]

@jp7677 Hi, this is available in nuget package v2.5.0 which was (accidentally 😛 / by yours truly ) generated from the dev branch