code: def build_hugo_md(filename, tag, bump):
      
      header = [
          '+++\n',
          'date = "{}"\n'.format(date.today().isoformat()),
          'title = "{}"\n'.format(tag),
          'author = "The COBRApy Team"\n',
          'release = "{}"\n'.format(bump),
          '+++\n',
          '\n'
      ]
      with open(filename, "r") as file_h:
          content = insert_break(file_h.readlines())
      header.extend(content)
      with open(filename, "w") as file_h:
          file_h.writelines(header)
docs: Build the markdown release notes for Hugo.
  
      Inserts the required TOML header with specific values and adds a break
      for long release notes.
  
      Parameters
      ----------
      filename : str, path
          The release notes file.
      tag : str
          The tag, following semantic versioning, of the current release.
      bump : {"major", "minor", "patch", "alpha", "beta"}
          The type of release.