Bump protobuf from 0.8.0 to 0.9.0

[dependabot]

Bumps protobuf from 0.8.0 to 0.9.0.

Changelog

Sourced from protobuf's changelog.

v0.9.0

Enhancements

Most of the enhancements in this release concern JSON support.

• JSON support for Google types. The library now supports JSON mapping of Google.Protobuf.* types such as timestamps, durations, type wrappers, and so on. In order to use this correctly, you need to manually generate the Protobuf Elixir files from the .proto files provided by Google since they are not shipped with this library.
• Accept integer numbers for float fields when decoding JSON.
• Add Protobuf.encode_to_iodata/1.
• Add the one_file_per_module CLI option when using the protoc-gen-elixir plugin.
• Use type-aware defaults in struct definitions for Protobuf messages. This means that now doing %MyMessage{} should be equivalent to MyMessage.new().
• Don't generate the transformer_module/0 callback in generated Protobuf modules if the transformer_module CLI option is not used.

Bug fixes

• Fix enum aliasing in JSON mapping.
• Fix encoding of default values when using transformer modules.
• Raise a Protobuf.DecodeError when decoding if fields with number 0 are encountered.
• Fix bugs when decoding big varints, integers, and so on (by casting).
• Cast enum integers to int32 when they overflow when decoding.
• Skip encoding for fields if they match their user-defined default in proto2.
• Fix decoding and encoding of packed repeated fields.
• Don't pack fields that use the [packed = false] option explicitly in proto3.

Commits

• a4fbe57 Release v0.9.0 (#230)
• 9f8f402 Small refactors to Protobuf.DSL
• 8cf69dc Rename errors file from error.ex to errors.ex
• 0902685 Small refactor to tag decoding in Protobuf.Decoder
• 39ebb9f Improve tests for Protobuf.Wire.Varint
• 06ada77 Move Protobuf.Encoder.wire_type/2 to Protobuf.Wire
• 25d49b8 Cast enum integers to int32 when they overflow
• 78c3c67 Fix explicit [packed = false] option in proto3 (#229)
• 9e03367 Deep merge nested messages (#227)
• 8e113c9 Improve variable name in Protobuf.Decoder
• Additional commits viewable in compare view

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[dependabot]

Superseded by #30.