Massive roll-up of changes. See CHANGES.txt.
diff --git a/CHANGES.txt b/CHANGES.txt
index 34ba736..02ce55c 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,49 @@
+2009-12-17 version 2.3.0:
+
+ General
+ * Parsers for repeated numeric fields now always accept both packed and
+ unpacked input. The [packed=true] option only affects serializers.
+ Therefore, it is possible to switch a field to packed format without
+ breaking backwards-compatibility -- as long as all parties are using
+ protobuf 2.3.0 or above, at least.
+ * The generic RPC service code generated by the C++, Java, and Python
+ generators can be disabled via file options:
+ option cc_generic_services = false;
+ option java_generic_services = false;
+ option py_generic_services = false;
+ This allows plugins to generate alternative code, possibly specific to some
+ particular RPC implementation.
+
+ protoc
+ * Now supports a plugin system for code generators. Plugins can generate
+ code for new languages or inject additional code into the output of other
+ code generators. Plugins are just binaries which accept a protocol buffer
+ on stdin and write a protocol buffer to stdout, so they may be written in
+ any language. See src/google/protobuf/compiler/plugin.proto.
+ * inf, -inf, and nan can now be used as default values for float and double
+ fields.
+
+ C++
+ * Various speed and code size optimizations.
+ * DynamicMessageFactory is now fully thread-safe.
+ * Message::Utf8DebugString() method is like DebugString() but avoids escaping
+ UTF-8 bytes.
+ * Compiled-in message types can now contain dynamic extensions, through use
+ of CodedInputStream::SetExtensionRegistry().
+
+ Java
+ * parseDelimitedFrom() and mergeDelimitedFrom() now detect EOF and return
+ false/null instead of throwing an exception.
+ * Fixed some initialization ordering bugs.
+ * Fixes for OpenJDK 7.
+
+ Python
+ * 10-25 times faster than 2.2.0, still pure-Python.
+ * Calling a mutating method on a sub-message always instantiates the message
+ in its parent even if the mutating method doesn't actually mutate anything
+ (e.g. parsing from an empty string).
+ * Expanded descriptors a bit.
+
2009-08-11 version 2.2.0:
C++
