Increment version (#251)

library.json

@@ -8,7 +8,7 @@
     "type": "git",
     "url": "https://github.com/Makuna/NeoPixelBus"
   },
-  "version": "2.4.1",
+  "version": "2.4.2",
   "frameworks": "arduino",
   "platforms": "*"
 }

library.properties

@@ -1,5 +1,5 @@
 name=NeoPixelBus by Makuna
-version=2.4.1
+version=2.4.2
 author=Michael C. Miller (makuna@live.com)
 maintainer=Michael C. Miller (makuna@live.com)
 sentence=A library that makes controlling NeoPixels (WS2811, WS2812, WS2813 & SK6812) and DotStars (APA102) easy.