chore(release): 4.2.0 [skip ci]

# [4.2.0](4.1.0...4.2.0) (2020-07-07)

### Features

* **events:** expose event names used in the current browser ([3e0dfac](3e0dfac)), closes [#473](#473)
* **options:** add touchAction option for setting the touch-action style ([ae70878](ae70878)), closes [#494](#494) [#492](#492)

Author: timmywil