• Fix git input handling of relative HEAD refs without branch names.
• Add includes key to module configurations in v2 buf.yaml, accepting a list of directories.
  • If includes is specified, a proto file is considered in the module only if it is in one of the
    directories specified.
  • If both includes and excludes keys are specified for a module, a proto file is considered
    part of this module if it is contained in any of the include paths and not in any of the exclude
    paths.
• Allow multiple module configurations in the same v2 buf.yaml to have the same directory path.