v2.0.3-4

• Revert code that put multiple ids on the same element - each compatibility slug and anchor link alias is back to having its own element in accordance with the html spec
• Fix circleci tests so that everything is no longer constantly failing, thank the bejesus
• Improve headline stringification to be 100% accurate no matter what type of node is included
• Remove unneeded dependencies, regenerate package-lock file
• General code cleanup and improvements in comments and documentation