[NES8] Nestopia 1.41.3 unofficial release - xBr filter

• This is a release of Nestopia that includes the xBr filter made by Hyllian. For more information on this filter go here
• This filter works well on SNES and Genesis games. It's not such a big benefit (over HQ4X) on NES games, but you might like the result.
• 1.41.2 had an ugly bug that resulted in a blank screen in some cases. This version fixes that and adds the A and C variants of the filter.
• The difference between 4xBr A-B-C and HQ4X:

A - Don't round corners. (Good for RGP games)
B - Round some corners. (The default setting)
C - Round all corners (On the FF screenshot the windows in the houses are now smaller and the doors are tent openings)