2.0.0-beta2: Allow async crawl definition (#11)

* Allow top level crawl() to be async

* Cleanup

* Mock test context

2.0.0-beta1

Cleanup (#10)

* Add driverOptions to be passed per-request

* Update README.md

* Add example

* Run integration tests during test phase

* Fix working directory

* Emit typescript declarations

* Add test for root exports

* Better document example file

* Swap driver to a simple function

* More cleanup

* Switch to minimist to simplify CLI

* Enhance CLI testing and structuring

* Move CLI code into index of cli directory

* Move isCrawlerRequest

1.2.0

Bump changelog