update to visualization API 4.1.0 and code cleanups

.clang-format

@@ -0,0 +1,93 @@
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+TabWidth:        8
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+...

debian/copyright

@@ -2,7 +2,7 @@ Format: http://dep.debian.net/deps/dep5
 Upstream-Name: visualization.matrix
 
 Files: *
-Copyright: 2015-2021 Team Kodi
+Copyright: 2015-2026 Team Kodi
 License: GPL-2+
  This package is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
@@ -22,7 +22,8 @@ License: GPL-2+
 
 
 Files: debian/*
-Copyright: 2013 wsnipex <[email protected]>
+Copyright: 2015-2026 Team Kodi
+           2013 wsnipex <[email protected]>
 License: GPL-2+
  This package is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by

lib/kissfft/kiss_fft_log.h

@@ -33,4 +33,4 @@
 
 
 
-#endif /* kiss_fft_log_h */
+#endif /* kiss_fft_log_h */

lib/kodi-kissfft-note.txt

@@ -1,2 +1,2 @@
 kissfft from https://github.com/mborgerding/kissfft
-Sync to version 131.1.0 (16. Feb. 2021)
+Sync to version 131.2.0 (22. Oct. 2025)