Release 0.1.13

Important security update

See following: https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md#v261

• Merge branch 'master' into develop (94f224a)
• Merge branch 'develop' of github.com:scriptcoded/simple-pdf into develop (5cb6ff3)
• Bump node-fetch from 2.6.0 to 2.6.1 (#3) (119c745)