Normalize license with SPDX identifier
Starting with version 3.5.0, namcap checks the license field to conform to SPDX spec. Unfortunately, I can't find the canonical way to specify license for proprietary software. The best I can come up with is by SPDX spec Annex. E:
Alternatively, you can use a LicenseRef- custom license identifier to refer to a license that is not on the SPDX License List, such as the following:
SPDX-License-Identifier: LicenseRef-my-special-license
Thus this patch.