Changed window variable to root
Merge pull request #2 from txgruppi/fix-removed-window-reference

Changed window variable to root
Release v1.2.1
indexOf polyfill
Release v1.2.2
doc
improvements to concurrency mechanism
leaner emit
integration test
Release v1.3.0
updated documentation
more readable readme
updated tests, readme
Release v1.3.1
concurrency caps for everyone
argument shifting
Release v1.3.2
Release v1.4.0
improve readme readability
Update README.md