Added 3.0.0-beta-4 changelog.
Change-Id: I997012e7e9b58d9ec8b2f59429d71c98d81aa40d
diff --git a/CHANGES.txt b/CHANGES.txt
index 3459ccc..f3524b8 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,83 @@
+2016-07-15 version 3.0.0-beta-4 (C++/Java/Python/Ruby/Objective-C/C#/JavaScript)
+ General
+ * Added a deterministic serialization API for C++ and Java. The deterministic
+ serialization guarantees that given a binary, equal messages will be
+ serialized to the same bytes. This allows applications like MapReduce to
+ group equal messages based on the serialized bytes. The deterministic
+ serialization is, however, NOT canonical across languages; it is also
+ unstable across different builds with schema changes due to unknown fields.
+ Users who need canonical serialization, e.g. persistent storage in a
+ canonical form, fingerprinting, etc, should define their own
+ canonicalization specification and implement the serializer using reflection
+ APIs rather than relying on this API.
+ * Added OneofOptions. You can now define custom options for oneof groups.
+ import "google/protobuf/descriptor.proto";
+ extend google.protobuf.OneofOptions {
+ optional int32 my_oneof_extension = 12345;
+ }
+ message Foo {
+ oneof oneof_group {
+ (my_oneof_extension) = 54321;
+ ...
+ }
+ }
+
+ C++ (beta)
+ * Introduced a deterministic serialization API in
+ CodedOutputStream::SetSerializationDeterministic(bool). See the notes about
+ deterministic serialization in the General section.
+ * Added google::protobuf::Map::swap() to swap two map fields.
+ * Fixed a memory leak when calling Reflection::ReleaseMessage() on a message
+ allocated on arena.
+ * Improved error reporting when parsing text format protos.
+ * JSON
+ - Added a new parser option to ignore unknown fields when parsing JSON.
+ - Added convenient methods for message to/from JSON conversion.
+ * Various performance optimizations.
+
+ Java (beta)
+ * Introduced a deterministic serialization API in
+ CodedOutputStream#useDeterministicSerialization(). See the notes about
+ deterministic serialization in the General section.
+ * File option "java_generate_equals_and_hash" is now deprecated. equals() and
+ hashCode() methods are generated by default.
+ * Added a new JSON printer option "omittingInsignificantWhitespace" to produce
+ a more compact JSON output. The printer will pretty-print by default.
+ * Updated Java runtime to be compatible with 2.5.0/2.6.1 generated protos.
+
+ Python (beta)
+ * Added support to pretty print Any messages in text format.
+ * Added a flag to ignore unknown fields when parsing JSON.
+ * Bugfix: "@type" field of a JSON Any message is now correctly put before
+ other fields.
+
+ Objective-C (beta)
+ * Updated the code to support compiling with more compiler warnings
+ enabled. (Issue 1616)
+ * Exposing more detailed errors for parsing failures. (PR 1623)
+ * Small (breaking) change to the naming of some methods on the support classes
+ for map<>. There were collisions with the system provided KVO support, so
+ the names were changed to avoid those issues. (PR 1699)
+ * Fixed for proper Swift bridging of error handling during parsing. (PR 1712)
+ * Complete support for generating sources that will go into a Framework and
+ depend on generated sources from other Frameworks. (Issue 1457)
+
+ C# (beta)
+ * RepeatedField optimizations.
+ * Support for .NET Core.
+ * Minor bug fixes.
+ * Ability to format a single value in JsonFormatter (advanced usage only).
+ * Modifications to attributes applied to generated code.
+
+ Javascript (alpha)
+ * Maps now have a real map API instead of being treated as repeated fields.
+ * Well-known types are now provided in the google-protobuf package, and the
+ code generator knows to require() them from that package.
+ * Bugfix: non-canonical varints are correctly decoded.
+
+ Ruby (alpha)
+ * Accessors for oneof fields now return default values instead of nil.
+
2016-05-16 version 3.0.0-beta-3 (C++/Java/Python/Ruby/Nano/Objective-C/C#/JavaScript)
General
* Supported Proto3 lite-runtime in C++/Java for mobile platforms.
