ChangeLog.md in ffi-wiring_pi-0.4.0 vs ChangeLog.md in ffi-wiring_pi-0.5.0

@@ -1,4 +1,5 @@
 # 0.4.0 Added Software Tone PWM functions wrappers
 # 0.3.0 Added Software PWM, added instructions for libws281x, but not enabled
 # 0.2.0 Added PWM pin control functions
 # 0.1.0 Added GPIO basic functions: read and write
+# 0.1.0 Added Pcf8591 module to setup pins