Videojs Abloop Versions Save

Switched to common.js export for compatiblity with node v12 etc.

See https://stackoverflow.com/questions/63109098/nodejs-12-syntaxerror-unexpected-token-export/64282671

Added npm ignore

Converted code to use ES6 modules, using parcel.js to build.

See https://github.com/phhu/videojs-abloop/issues/5

Fixed NaN duration issue, updated dependencies, added test for no video

updated dependencies, fixed tests, added return value.

Added ability to set url and fragment via ctrl / shift / alt left click on loop button