Protocol Buffers 26.0

What's new in this version:

- This version includes breaking changes to: Java, PHP, C++, Ruby, Python
- [Java] Remove the deprecated always_print_primitive_fields option from Java, Python and C++ JSON parsers
- [Java] Remove unused helper methods for creating new mutable arraylists
- [Java] Use Editions features in Java full runtimes
- [Java] Stop generating the "newInstance" method. This is not used anymore
- [Java] Remove unused overload of AbstractMessageLite.addAll that worked on a Collection instead of a List
- [Java] Remove obsolete runtime internalBuildGeneratedFileFrom which was for backwards compatibility with old gencode
- [Java] Remove unnecessary overloads of methods:
- [Java] Remove unnecessary generated overrides for GeneratedMessage.Builder methods:
- [Java] The base class for generated messages will be GeneratedMessage, not GeneratedMessageV3.
- [Java] Remove deprecated runtime methods for compatibility with old v2.x.x gencode
- [Java] Remove deprecated TextFormat print methods. These should be replaced by corresponding TextFormat.printer() methods
- [Java] Lock down visibility for descriptor syntax APIs
- [Java] Make deprecated Java gencode PARSER variable private
- [Java] Use Editions features in Java full runtimes
- [Java] The base class for generated messages will be GeneratedMessage, not GeneratedMessageV3.
- [PHP] Validate UTF-8 in string setters, as previously announced
- [PHP] Remove deprecated legacy class aliases
- [PHP] Validate UTF-8 in string setters, as previously announced
- [PHP] Remove support for PHP generic services
- [C++] Remove the deprecated always_print_primitive_fields option from Java, Python and C++ JSON parsers
- [C++] Remove const GetArena method on RepeatedPtrField
- [C++] Disallow incorrect ctype usage
- [C++] Remove deprecated std::string error collector overrides
- [C++] Promote ExtensionRange to a proper class
- [C++] Remove deprecated clear APIs on repeated fields
- [C++] Remove C++ legacy syntax descriptor APIs
- [C++] Remove deprecated syntax APIs
- [C++] Remove deprecated SupportsUnknownEnumValues method
- [Ruby] Removed syntax and added has_presence?/is_packed?
- [Ruby] Fixed json_encode/json_decode to use the message's pool
- [Ruby] Freeze is now recursive, affecting all sub-messages, maps, and repeated fields
- [Ruby] Fixed inconsistencies in Message#to_h, as previously announced
- [Ruby] Dropped support for Ruby DSL, as previously announced
- [Ruby] Lock down visibility for descriptor syntax APIs
- [Ruby] Removed syntax and added has_presence?/is_packed?
- [Ruby] Fixed json_encode/json_decode to use the message's pool
- [Ruby] Freeze is now recursive, affecting all sub-messages, maps, and repeated fields
- [Ruby] Fixed inconsistencies in Message#to_h, as previously announced
- [Python] Remove the deprecated always_print_primitive_fields option from Java, Python and C++ JSON parsers
- [Python] Removed obsolete/duplicate setup.py from Python
- [Python] Made text_format output default to UTF-8
- [Python] Remove RegisterExtension in message class
- [Python] Reject extend repeated field with none iterable
- [Python] Remove Deprecated APIs that add non top descriptor
- [Python] Check if Timestamp is valid
- [Python] Remove msg.UnknownFields() support in pure python and cpp extension
- [Python] Remove deprecated syntax accessor
- Protobuf News may include additional announcements or pre-announcements for upcoming changes

Compiler:
- Add <shellapi.h> include for CommandLineToArgvW
- Fix getting env variables on windows
- Proper fix utf8 command line arguments
- Allocate an editions FeatureSet extension
- Make rules_ruby a dev-only dependency

C++:
- Remove rust proto libraries from the editions/BUILD file
- Fix CMake regex escaping
- Escape _from_dir in install.cmake for regex special characters (e.g. c++) before REGEX REPLACE
- Tweak BUILD setup to make the layering check change less disruptive
- Add missing alias targets for C++ util libraries
- Breaking change: Remove the deprecated always_print_primitive_fields option from Java, Python and C++ JSON parsers