diff --git a/Cargo.toml b/Cargo.toml
index 8c1a232..bf52a04 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,10 +1,13 @@
 [package]
 name = "lipsum"
-version = "0.2.0"
+version = "0.3.0"
 authors = ["Martin Geisler <martin@geisler.net>"]
 description = """
 Lipsum is a lorem ipsum text generation library. Use this if you need
 some filler text for your application.
+
+The text is generated using a simple Markov chain, which you can also
+instantiate to generate your own pieces of pseudo-random text.
 """
 documentation = "https://docs.rs/lipsum/"
 repository = "https://github.com/mgeisler/lipsum/"
diff --git a/README.md b/README.md
index 7adbce0..db02a62 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ application.
 Add this to your `Cargo.toml`:
 ```toml
 [dependencies]
-lipsum = "0.2"
+lipsum = "0.3"
 ```
 
 and this to your crate root:
@@ -52,6 +52,27 @@ lorem ipsum text is derived from part of that book.
 
 ## Release History
 
+### Version 0.3.0 — July 28th, 2017
+
+Performance is improved by about 50% when generating text, but
+training the Markov chain now takes about twice as long as before.
+
+The `MarkovChain` struct has many new methods:
+
+* `new_with_rng` makes it possible to specify the random number
+  generator used by the Markov chain. Use this to get deterministic
+  and thus reproducible output for tests. `MarkovChain` now owns the
+  RNG it uses and as a consequence, it has an extra type parameter.
+  This is a breaking change if you used struct directly in your code.
+
+* `iter` and `into_from` return iterators over words in the Markov
+  chain. The `generate` and `generate_from` methods are now
+  straight-forward convenience wrappers for the iterators.
+
+* `len` tells you the number of stats in the Markov chain and
+  `is_empty` tells you if the Markov chain is empty, meaning that it
+  hasn't been trained on anything yet.
+
 ### Version 0.2.0 — July 10th, 2017
 
 Rust version 1.6.0 is now supported. This is checked with TravisCI.