Runlike

Add add-host support.

* Improved handling of quotes (e.g. in env-vars). Thank you, mikedougherty
* Support for `--log-driver` and `--log-opt`. Thank you, anryko

And more test coverage.

Two new options: `--mac-address` and `--user`, courtesy of rayjohnson.

Just bug fixes this time:

* Handle spaces in `command` properly (thanks timzuiddam for the heads up).
* Fixed link aliases (thanks Koxx3 for the heads up).

Support for `--privileged` and `--label` thanks to HuPonya.

New options supported:

* `--net`
* `--hostname` (thank you, Ioannis Kalyvas)