Fixing demo

• stopword.js was renamed to stopword.umd.js in latest version.

Fix demo + change test framework to batr

Also fixing demo and moving stopword library from dependency to devDependency. So not bundled, but possible to test with.

Stopword dependency update

Bumping stopword version

security update

Updating all devDependencies, so no real issues with the distribution code.

Minor cleanup after new major release

Generating a .latest.js and pointing the demo to this. Also pointing to stopword.latest.js

Breaking changes: Simpler module, more languages supported

eklem-headline-parser is now language agnostic, less opinionated and only support languages through a stopword-remover. Input is headline, body and cutoff (maximum keywords you want back).

Also, it runs in the browser and has an interactive demo.