Do not require a --seeds argument with --projected_w (#5)

generate.py

@@ -37,7 +37,7 @@ def num_range(s: str) -> List[int]:
 @click.command()
 @click.pass_context
 @click.option('--network', 'network_pkl', help='Network pickle filename', required=True)
-@click.option('--seeds', type=num_range, help='List of random seeds', required=True)
+@click.option('--seeds', type=num_range, help='List of random seeds')
 @click.option('--trunc', 'truncation_psi', type=float, help='Truncation psi', default=1, show_default=True)
 @click.option('--class', 'class_idx', type=int, help='Class label (unconditional if not specified)')
 @click.option('--noise-mode', help='Noise mode', type=click.Choice(['const', 'random', 'none']), default='const', show_default=True)