diff --git a/README.md b/README.md
index b02862e..1563932 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,10 @@
 # ArduinoShrink
-This library replaces Arduino AVR Core functions with smaller and faster versions, with the same functionality. The ATmega168 and 328 MCUs are supported at both 8MHz and 16Mhz.
-The Arduino Blink example sketch built for the Uno takes 924 bytes of flash, but only needs 286 bytes with ArduinoShrink.
+This library replaces Arduino AVR Core functions with smaller and faster versions, with the same or better functionality. It is designed for the ATmega168 and 328 MCUs at 4 to 16 MHZ, though only 8MHz and 16Mhz are regularly tested.
+The Arduino Blink example sketch built for the Uno takes 924 bytes of flash, but only needs 192 bytes with ArduinoShrink.
 
 ## Usage
 Download [a release](https://github.com/nerdralph/ArduinoShrink/releases), and extract the files into your Arduino/libraries folder.  Select ArduinoShrink from the Sketch, Include Library menu.  This will replace several Arduino functions with smaller and faster versions.  The Arduino pin number must be known at compile time if you are using this library.
 
+## Planned Improvements
+Update digitalWrite() to work when the pin is not known at compile time.
+
diff --git a/library.properties b/library.properties
index c2fe302..8a14b4f 100644
--- a/library.properties
+++ b/library.properties
@@ -7,3 +7,4 @@ paragraph=
 url=
 architectures=avr
 dot_a_linkage=true
+includes=ArduinoShrink.h