Update change log for 3.1.0 (#2173)
diff --git a/CHANGES.txt b/CHANGES.txt
index d3b78f7..7fb2da2 100644
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@@ -1,3 +1,83 @@
+2016-09-23 version 3.1.0 (C++/Java/Python/PHP/Ruby/Objective-C/C#/JavaScript/Lite)
+ General
+ * Proto3 support in PHP (alpha).
+ * Various bug fixes.
+
+ C++
+ * Added MessageLite::ByteSizeLong() that’s equivalent to
+ MessageLite::ByteSize() but returns the value in size_t. Useful to check
+ whether a message is over the 2G size limit that protobuf can support.
+ * Moved default_instances to global variables. This allows default_instance
+ addresses to be known at compile time.
+ * Adding missing generic gcc 64-bit atomicops.
+ * Restore New*Callback into google::protobuf namespace since these are used
+ by the service stubs code
+ * JSON support.
+ * Fixed some conformance issues.
+ * Fixed a JSON serialization bug for bytes fields.
+
+ Java
+ * Fixed a bug in TextFormat that doesn’t accept empty repeated fields (i.e.,
+ “field: [ ]”).
+ * JSON support
+ * Fixed JsonFormat to do correct snake_case-to-camelCase conversion for
+ non-style-conforming field names.
+ * Fixed JsonFormat to parse empty Any message correctly.
+ * Added an option to JsonFormat.Parser to ignore unknown fields.
+ * Experimental API
+ * Added UnsafeByteOperations.unsafeWrap(byte[]) to wrap a byte array into
+ ByteString without copy.
+
+ Python
+ * JSON support
+ * Fixed some conformance issues.
+
+ PHP (Alpha)
+ * We have added the proto3 support for PHP via both a pure PHP package and a
+ native c extension. The pure PHP package is intended to provide usability
+ to wider range of PHP platforms, while the c extension is intended to
+ provide higher performance. Both implementations provide the same runtime
+ APIs and share the same generated code. Users don’t need to re-generate
+ code for the same proto definition when they want to switch the
+ implementation later. The pure PHP package is included in the php/src
+ directory, and the c extension is included in the php/ext directory.
+
+ Both implementations provide idiomatic PHP APIs:
+ * All messages and enums are defined as PHP classes.
+ * All message fields can only be accessed via getter/setter.
+ * Both repeated field elements and map elements are stored in containers
+ that act like a normal PHP array.
+
+ Unlike several existing third-party PHP implementations for protobuf, our
+ implementations are built on a "strongly-typed" philosophy: message fields
+ and array/map containers will throw exceptions eagerly when values of the
+ incorrect type (not including those that can be type converted, e.g.,
+ double <-> integer <-> numeric string) are inserted.
+
+ Currently, pure PHP runtime supports php5.5, 5.6 and 7 on linux. C
+ extension runtime supports php5.5 and 5.6 on linux.
+
+ See php/README.md for more details about installment. See
+ https://developers.google.com/protocol-buffers/docs/phptutorial for more
+ details about APIs.
+
+ Objective-C
+ * Helpers are now provided for working the the Any well known type (see
+ GPBWellKnownTypes.h for the api additions).
+ * Some improvements in startup code (especially when extensions aren’t used).
+
+ Javascript
+ * Fixed missing import of jspb.Map
+ * Fixed valueWriterFn variable name
+
+ Ruby
+ * Fixed hash computation for JRuby's RubyMessage
+ * Make sure map parsing frames are GC-rooted.
+ * Added API support for well-known types.
+
+ C#
+ * Removed check on dependency in the C# reflection API.
+
2016-09-06 version 3.0.2 (C++/Java/Python/Ruby/Objective-C/C#/JavaScript/Lite)
General
* Various bug fixes.
