We've had this class for a while backing the implementation of the
AppendFormat extension method. Making this public so we can use it in MVC
in localization.
Some updates to the API surface and name to be aligned with
System.FormattableString
Currently we overload the definition of WriteTo on IHtmlContent
implementation classes to either represent a "real" write or a "flatten"
by checking if the writer inherits HtmlText writer.
This overloading is a bit of an odd fit and hides the real semantic we
want for flattening.
Additionally, we want to gradually make the concept of a pooled
backing-buffer for IHtmlContent first-class - using pooled buffers
dictates that we support move-semantics to some degree.
This change makes the work that we do for flattening into pooled buffers
explicit rather than hidden.
- aspnet/Coherence-Signed#187
- remove `<RootNamespace>` settings but maintain other unique aspects e.g. `<DnxInvisibleContent ... />`
- in a few cases, standardize on VS version `14.0` and not something more specific