Set UserInfo per Send

Under a multi threaded scenario it's possible that the User/UserInfo on
a reused client could be changed before a SendInBackground operation
completes, leading to a disconnect from the User at the time the
Exception was generated and when the Error Message is built.
Store WebApi Request body content before the model binder can get to it
Initial commit of iOS unified provider.
Xamarin.Mac.Unified provider.
Updated dlls used in component samples.
Project option fixes.
Xamarin.Mac.Unified project option fixes.
Add unified iOS dll to NuGet package and zip.
Merge branch 'Unified-API-support' of https://github.com/MindscapeHQ/raygun4net into Unified-API-support
Unified sample for the Xamarin Component.
Updated the Xamarin Component.
Minor project update.
Merge pull request #203 from MindscapeHQ/Unified-API-support

Unified api support
Initial commit of creating anonymous user ids for iOS
Anonymous user ids for Mac
Anonymous user ids for Android
Merge pull request #205 from MindscapeHQ/Automatic-anonymous-user-tracking

Automatic anonymous user tracking
Merge pull request #200 from MindscapeHQ/webapi-body-content

Send RawData for WebApi calls
IsRawDataIgnored option for Raygun4Net
IsRawDataIgnored option for Raygun4Net.WebApi