Improvement suggestion for Base.Sublist

[GoogleCodeExporter]

I think I see an improvement needed in method base.sublist around ln 109 in 
Base.cs 

Seeing as though 'sublist' is called to create a sublist of things like top 
tags, for example if Last.Fm returns 0 tags for an artist - an Out Of Range 
Exception occurs at 'original[i]' as the original list is empty . I have added 
a length check that returns an empty array if needed:

internal T[] sublist<T> (T[] original, int length)
{
   List<T> list = new List<T>();

   // IMPROVEMENT - if original is empty - return 
   if (original.Length < 1) return list.ToArray();

   for(int i=0; i<length; i++)
   list.Add(original[i]);

   return list.ToArray();
}

This will occur when calling:
:Artist.GetTopTags(int limit)
:Track.GetTopFans(int limit)
:Track.GetTopTags(int limit)
:Album.GetTopTags(int limit)
:User.GetTopTags(int limit)
:User.GetNeighbours(int limit)
:User.GetFriends(int limit)

Original issue reported on code.google.com by sa...@trackn.fm on 19 Nov 2013 at 7:55

[GoogleCodeExporter]

This will occur when calling those methods - only when Last.Fm returns an empty 
list.

Original comment by sa...@trackn.fm on 19 Nov 2013 at 7:56