Add Configuration API

ExtendedXmlSerializer should have a configuration API that allows users to setup the configuration of the serializer and then instantiate it accordingly. From https://github.com/wojtpl2/ExtendedXmlSerializer/issues/20#issuecomment-266399371:

//Without configuratino
var serializer = new ExtendedXmlSerializer();
// with configuration
var serializer = new ExtendedXmlSerializer(config);
// or from configuration
var serializer= config.CreateSerializer();
In configuration you will be able to configure all settings:

for example:

ExtendedXmlSerializer.Initialize(cfg =>{
cfg.ConfigType<OtherClass>()
.Property(p=>p.Id).ObjectReference().AsAttribute()
.Property(p=>p.Password).Encrypt()
.Property(p=>p.UserName).ChangeName("User").Order(1)
.AddExtension(AttachedPropertyToOtherClass);

cfg.UseAutoProperties();
cfg.UseNamespaces();
cfg.AddExtension(AttachedPropertyToAllTypeExtension);
});

[WojciechNagorski]

Yes it is good result for this moment!

[WojciechNagorski]

276us sounds better 😃