This change caches the actual model metadata instances. Some profiling
showed we didn't go far enough, we were allocating a lot of ModelMetadata
+ ModelPropertyCollection instances.
Adding Equals and GetHashCode implementations - the lack of these results
in a lot of boxing.
Removing dead code, not possible to create a model metadata for a
parameter anymore.
- #438 part 1/2 and #2027 part 1/3
slight oddity in the XML docs
- unfortunately Roslyn seems to ignore `TypeInfo` being a subclass of `Type`
nit: use correct `warningsAsErrors` datatype in test project.json
Separates the MMP into two phases:
1). Creation of the ModelMetadata, discovery of properties and attributes
(reflection) is part of the MMP
2). Lookup of details based on attributes is now part of another phase,
and has its results cached.
Users can now implements and register an IFooMetadataProvider to customize
a single aspect of metadata (see how data annotations does it).
Ryan Nowak
Doug Bunting
N. Taylor Mullen