Add XML comments to public entities.

Interop/Version.cs

@@ -42,12 +42,19 @@ using System.Runtime;
 
 namespace Aaru.CommonTypes.Interop
 {
+    /// <summary>
+    /// Gets our own, or the runtime's version
+    /// </summary>
     public static class Version
     {
         /// <summary>Gets version string</summary>
         /// <returns>Version</returns>
         public static string GetVersion() => typeof(Version).Assembly.GetName().Version?.ToString();
 
+        /// <summary>
+        /// Gets .NET Core version
+        /// </summary>
+        /// <returns>Version</returns>
         public static string GetNetCoreVersion()
         {
             Assembly assembly = typeof(GCSettings).Assembly;
@@ -69,6 +76,10 @@ namespace Aaru.CommonTypes.Interop
             return null;
         }
 
+        /// <summary>
+        /// Gets Mono version
+        /// </summary>
+        /// <returns>Version</returns>
         public static string GetMonoVersion()
         {
             if(!DetectOS.IsMono)