Bump version to 2.5.16

library.properties

@@ -1,5 +1,5 @@
 name=Adafruit SSD1306
-version=2.5.15
+version=2.5.16
 author=Adafruit
 maintainer=Adafruit <info@adafruit.com>
 sentence=SSD1306 oled driver library for monochrome 128x64 and 128x32 displays