PNG Reference Library version 2

• Name: PNG Reference Library version 2
• Short Identifier as by SPDX: libpng-2.0
• Open Source Initiative Status: Not OSI approved
• Description: http://www.libpng.org/pub/png/src/libpng-LICENSE.txt
• Scope: n/a
• SPDX Licence Text: http://spdx.org/licenses/libpng-2.0.html