v0.13.0

• Fix: add TypeScript declaration file (#140)
• Chore(package): update mocha to version 6.0.1 (#145)
• Chore(package): update eslint to version 5.16.0 (#149)
• Chore(package): update nyc to version 14.0.0 (#152)
• Fix(package): update file-type to version 11.0.0 (#154)
• Chore(package): update jsdoc-to-markdown to version 5.0.0 (#156)
• Chore(package): update rollup-plugin-node-resolve to version 5.0.0 (#158)
• Chore(package): update rollup-plugin-commonjs to version 10.0.0 (#157)
• Breaking: drop Node.js 6 support (#155)
  • requires node >=8.16.0
• Chore(package): update @egy186/eslint-config to version 0.37.0 (#160)