Guard statement on setSmallIcon for android version lower than 6

Author: Fector101

setup.py

@@ -6,7 +6,7 @@
 
 setup(
     name="android-notify",
-    version="1.59.1",
+    version="1.59.2",
     author="Fabian",
     author_email='fector101@yahoo.com',
     description="A Python package that simplifies creating Android notifications in Kivy apps.",