Update version number in library.properties (1.0.1)

library.properties

@@ -1,5 +1,5 @@
 name=Adafruit GFX Library
-version=1.0.0
+version=1.0.1
 author=Adafruit
 maintainer=Adafruit <info@adafruit.com>
 sentence=Adafruit GFX graphics core library, this is the 'core' class that all our other graphics libraries derive from.