[ Robert Edmonds ]
* Release 1.3.0.

* Add test case for the issue in #220 (#254).

* Fix issue #251, "Bad enums with multiple oneofs" (#256).

* Add warning flags to my_CFLAGS (#257).

* Fix namespace errors when compiled with latest protobuf (#280).

* Bump minimum required header version for proto3 syntax (#282).

[ Paolo Borelli ]
* Turn the compiler into a protoc plugin (#206). This allows the protobuf-c
  compiler to be invoked as "protoc --c_out=...". For backwards
  compatibility, we still ship a protoc-c command, but it's a symlink to the
  protoc-gen-c binary.

* proto3 support (#228).

* Remove leftover FIXME comment (#258).

* Fix proto3 "is zeroish" evaluation (#264).

* Small cleanup in oneof handling (#265).

* Rework is_zeroish one more time (#267).

* proto3: make strings default to "" instead of NULL (#274).

[ Tomek Wasilczyk ]
* Fix -Wsign-compare warnings (#213).

* Fix ISO C90 -Wdeclaration-after-statement warnings (#214).

* Fix bigendian -Wunused-label warning (#215).

[ Ilya Lipnitsky ]
* protoc-c/c_message.cc: Force int size on oneof enums (#221). Fixes wrong
  enum generation and handling for onceof cases (#220).

[ Adnan ]
* Fix cmake build if built as part of an external project (#231).

[ Gregory Detal ]
* Remove .pb.{cc,h} in distdir instead of top_distdir in order to prevent
  removing files from other projects when protobuf-c is included as an
  autotools subproject (#232).

[ Ben Farnham ]
* Relax autoconf constraint from v2.64 to v2.63 so that it works on older
  Linux distros (#233).

[ Thomas Koeckerbauer ]
* rm argument fix for Solaris (#234).

* Add 'const' qualifier to 'init_value' variable in generated files (#236).

[ Richard Kettlewell ]
* Document and extend the effect of passing NULL to ..._free_unpacked
  functions (#255).

[ Alex Milich ]
* CMake: Workaround for static builds that use MSVC (#243).

[ Josh Junon ]
* CMake: Allow protobuf-c to be included via include_subdirectory (#245).

[ Alexei Kasatkin ]
* CMake: Windows fixes (#266).