1.4.0 / 2018-04-07
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* exposed this changelog information in the README file (and updated missing changelog information)

1.3.0 / 2018-04-07
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* exposed the already existing tests via 'npm test'

1.2.0 / 2017-04-30
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* Fixed issue for browsers (IE, Safari - respective in general WebKit based browsers e.g. JavaFX) not supporting JavaScript "Symbol".

1.1.1 / 2017-04-29
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* Updated keywords list

1.1.0 / 2017-04-20
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  * Initial commit (earlier commits/versions should be ignored because they were not functional)