* [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
* [libgd] Add libgd with GIF and TGA fuzzers
* [libgd] Add gif corpus
* use a Googlier email address
* Remove template comments
* Centralize image size constraint
instead of trying to parse each format individually in the fuzzing
target.
* Add BMP fuzzing target
* Add project emails
* Document workaround for image size cap
* Single-source format fuzzers
* Add other built-in formats
* Add libz-dev for gd2 format
* Linker incantation for zlib (thanks Alex!)