tastudio:

- scroll to new marker and new branch
- don't kill selection per marker removal

BizHawk.Client.EmuHawk/tools/TAStudio/BookmarksBranchesBox.cs

@@ -135,6 +135,7 @@ namespace BizHawk.Client.EmuHawk
 			Movie.AddBranch(branch);
 			BranchView.RowCount = Movie.BranchCount;
 			Movie.CurrentBranch = Movie.BranchCount - 1;
+			BranchView.ScrollToIndex(Movie.CurrentBranch);
 			BranchView.Refresh();
 			Tastudio.RefreshDialog();
 		}

BizHawk.Client.EmuHawk/tools/TAStudio/MarkerControl.cs

@@ -150,7 +150,6 @@ namespace BizHawk.Client.EmuHawk
 			if (MarkerView.AnyRowsSelected)
 			{
 				SelectedMarkers.ForEach(i => Markers.Remove(i));
-				MarkerInputRoll.DeselectAll();
 				Tastudio.RefreshDialog();
 				MarkerView_SelectedIndexChanged(null, null);
 			}
@@ -190,6 +189,7 @@ namespace BizHawk.Client.EmuHawk
 				UpdateValues();
 			}
 
+			MarkerView.ScrollToIndex(Markers.Count() - 1);
 			Tastudio.RefreshDialog();
 		}