Initial commit.
Build scripts were provided.
New proto: resource.proto.
New proto: settings.proto.
New proto: testing.proto.
settings.proto: Redirection definition.
proto: (Rlimit, Rusage) -> Resource.
{settings,testing}.proto namespaces bug fixes.
New proto: result.proto.
New proto: task.proto.
New proto: problem.proto.
Protocol buffers: compatibility with Yandex.Contest.Invoker.
Build system refactoring.
result.SystemResult declaration + minor fixes.
settings.Run.Security was removed.
proto: result.Execution: exit_status and term_sig declaration.
proto: settings inheritance was removed (simplification).
result.Execution.Status fix.
task.Builder documentation.
settings.File.Range fixes.