Fix missing OptionsResolver requirement

Update dependencies

Fix code style and tests

Javascript improvements (omines#145)

* JS improvements

* Remove scrollX

* Allow config.options and config.url as functions

* Remove empty line

Prepare 0.4.1

Release 0.4.0

Prepare 0.3.1

Prepare 0.3.0 release

Prepare 0.2.2 release

Prepare 0.2.1