update NEWS and other files for 0.9 release

Author: warner

MANIFEST.in

@@ -0,0 +1,2 @@
+# basic metadata
+include MANIFEST.in LICENSE NEWS README.md

NEWS

@@ -1,3 +1,9 @@
+* Release 0.9 (01 Oct 2013)
+
+Add secp256k1 curve (thanks to Benjamin Dauvergne). Add deterministic (no
+entropy needed) signatures (thanks to slush). Added py3.2/py3.3 compatibility
+(thanks to Elizabeth Myers).
+
 * Release 0.8 (04 Oct 2011)
 
 Small API addition: accept a hashfunc= argument in the constructors for

README.md

@@ -241,6 +241,18 @@ signature must use a different one (using the same number twice will
 immediately reveal the private signing key). The `sk.sign()` method takes an
 entropy= argument which behaves the same as `SigningKey.generate(entropy=)`.
 
+## Deterministic Signatures
+
+If you call `SigningKey.sign_deterministic(data)` instead of `.sign(data)`,
+the code will generate a deterministic signature instead of a random one.
+This uses the algorithm from RFC6979 to safely generate a unique `k` value,
+derived from the private key and the message being signed. Each time you sign
+the same message with the same key, you will get the same signature (using
+the same `k`).
+
+This may become the default in a future version, as it is not vulnerable to
+failures of the entropy source.
+
 ## Examples
 
 Create a NIST192p keypair and immediately save both to disk: