* [presubmit] Enforce language attribute in projectt.yaml to be always set.
* Update documentation, better presubmit check, new project template.
* add docstring to templates.py
* Add example values in the project.yaml template and remove python value for now
* Add "project: c++" to 256 projects
* format
* Add labels and selective_unpack sections to the presubmit check
* fix incorrect auto_ccs format in three projects
* fix nss emails after rebase
* [libtheora] Try enabling dataflow build config.
Just noticed that `dataflow` sanitizer is enabled while `fuzzing_engine` is not. Let's see if it works or should be removed.
* remove dataflow sanitizer
DavidKorczynski