tastudio: keep track of rerecords, increment them in InvalidateAfter()

markers: fix input roll context menu command removing Markers
gpgx: updated dll

BizHawk.Client.Common/movie/tasproj/TasMovie.cs

@@ -168,6 +168,7 @@ namespace BizHawk.Client.Common
 			LagLog.RemoveFrom(frame);
 			StateManager.Invalidate(frame + 1);
 			Changes = true; // TODO check if this actually removed anything before flagging changes
+            base.Rerecords++;
 		}
 
 		/// <summary>

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

@@ -580,7 +580,7 @@ namespace BizHawk.Client.EmuHawk
 		private void RemoveMarkersMenuItem_Click(object sender, EventArgs e)
 		{
 			IEnumerable<TasMovieMarker> markers = CurrentTasMovie.Markers.Where(m => TasView.SelectedRows.Contains(m.Frame));
-			foreach (TasMovieMarker m in markers)
+            foreach (TasMovieMarker m in markers.ToList())
 			{
 				CurrentTasMovie.Markers.Remove(m);
 			}