DiscoverParentChildrenRelationships pulls all properties while DiscoverChildParentRelationships only pulls properties IsSimpleSqlType

There appears to be an issue with how the DiscoverParentChildrenRelationships mapping is done.

DiscoverParentChildrenRelationships gets all properties, including properties where IsSimpleSqlType != true

however, when it tries to do the reverse, DiscoverChildParentRelationships, this only returns properties where IsSimpleSqlType == true.

In this example :
https://www.learndapper.com/relationships#dapper-one-to-many-relationships

public class Product
{
    public int ProductID { get; set; }
    public string ProductName { get; set; }
    ...
    public Category Category { get; set; }
}
public class Category
{
    public int CategoryID { get; set; }
    public string CategoryName { get; set; }
    ...
    public ICollection<Product> Products { get; set; }
}

This will fail because

DiscoverParentChildrenRelationships sees
public ICollection<Product> Products { get; set; }

but DiscoverChildParentRelationships DO NOT SEE
public Category Category { get; set; }

I have the fix ready, PR here :
#210