+2008-11-25 version 2.0.3:
+ * Enum values may now have custom options, using syntax similar to field
+ * Fixed bug where .proto files which use custom options but don't actually
+ define them (i.e. they import another .proto file defining the options)
+ had to explicitly import descriptor.proto.
+ * Adjacent string literals in .proto files will now be concatenated, like in
+ * Generated message classes now have a Swap() method which efficiently swaps
+ the contents of two objects.
+ * All message classes now have a SpaceUsed() method which returns an estimate
+ of the number of bytes of allocated memory currently owned by the object.
+ This is particularly useful when you are reusing a single message object
+ to improve performance but want to make sure it doesn't bloat up too large.
+ * New method Message::SerializeAsString() returns a string containing the
+ serialized data. May be more convenient than calling
+ * In debug mode, log error messages when string-type fields are found to
+ contain bytes that are not valid UTF-8.
+ * Fixed bug where a message with multiple extension ranges couldn't parse
+ * Fixed bug where MergeFrom(const Message&) didn't do anything if invoked on
+ a message that contained no fields (but possibly contained extensions).
+ * Fixed ShortDebugString() to not be O(n^2). Durr.
+ * Fixed crash in TextFormat parsing if the first token in the input caused a
+ * Fixed obscure bugs in zero_copy_stream_impl.cc.
+ * Added support for HP C++ on Tru64.
+ * Only build tests on "make check", not "make".
+ * Fixed alignment issue that caused crashes when using DynamicMessage on
+ * Simplify template usage to work with MSVC 2003.
+ * Work around GCC 4.3.x x86_64 compiler bug that caused crashes on startup.
+ (This affected Fedora 9 in particular.)
+ * New overload of mergeFrom() which parses a slice of a byte array instead
+ * New method ByteString.asReadOnlyByteBuffer() does what it sounds like.
+ * Improved performance of isInitialized() when optimizing for code size.
+ * Corrected ListFields() signature in Message base class to match what
+ subclasses actually implement.
+ * Some minor refactoring.
2008-09-29 version 2.0.2: