Screamshot

===

* Module is now available

===

* Add `generate_bytes_img_django_wrap` function

===

* Add `serialize` function
* Add `deserialize` function

===

* Add `browser-manager` script
* Add `screamshot` script

===

* A test and verification tool using Docker is now available

===

* `generate_bytes_img` is no more a sync function and `generate_bytes_img_prom` has been added
* `generate_bytes_img_prom` uses the `asyncio.Future` object