AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.3.4" />

.NET API 521,216 bytes

 HTMLModElement

public sealed class HTMLModElement : HTMLElement
Represents the HTML modifier (ins / del) element.
public string Cite { get; set; }

Gets or sets the value that contains a URI of a resource explaining the change.

public string Datetime { get; set; }

Gets or sets the value that contains date-and-time string representing a timestamp for the change.