update readme (#219)

Author: bitfield

Diff for: README.md

@@ -353,6 +353,8 @@ Sinks are methods that return some data from a pipe, ending the pipeline and ext
 
 | Version | New |
 | ----------- | ------- |
+| 0.24.0  | [`Hash`](https://pkg.go.dev/github.com/bitfield/script#Pipe.Hash) |
+|         | [`HashSums`](https://pkg.go.dev/github.com/bitfield/script#Pipe.HashSums) |
 | 0.23.0  | [`WithEnv`](https://pkg.go.dev/github.com/bitfield/script#Pipe.WithEnv) |
 |         | [`DecodeBase64`](https://pkg.go.dev/github.com/bitfield/script#Pipe.DecodeBase64) / [`EncodeBase64`](https://pkg.go.dev/github.com/bitfield/script#Pipe.EncodeBase64) |
 |         | [`Wait`](https://pkg.go.dev/github.com/bitfield/script#Pipe.Wait) returns error |