Arrays with constant time indexing and slicing

README.md

@@ -51,6 +51,11 @@ solution.
     Provide views that enable recursively pattern matching numbers as lists of
     digits, in both ascending and descending order of significance.
 
+- [Array](src/Array.md)
+
+  Provider wrappers over the standard library `IOArray` type to make them more
+  ergonomic to use.
+
 ## Index of years and days
 
 - 2015