* introduce pako and add general packer interface
* add tests for packer
* use function API instead of class API for better tree shaking support
* refcatoring the rollup bundle config
* hack together stylesheet observer
* Add test coverage for insertRule/deleteRule on stylesheets
* Add new observers
* update patch based on changes to master
* Functioning event recording
* Remove print statements
* Fix ID usage and mark add vs remove
* Correct type
Co-authored-by: Jon Perl <perl.jonathan@gmail.com>