Kubernetes-asyncio

* fix: aiohttp with `verify_ssl=False` ([33](https://github.com/tomplus/kubernetes_asyncio/pull/33), [bpicolo](https://github.com/bpicolo))

* feat: watch work forever if timeout is not specified ([30](https://github.com/tomplus/kubernetes_asyncio/pull/30), [tomplus](https://github.com/tomplus))

* feat: support Python 3.7 ([28](https://github.com/tomplus/kubernetes_asyncio/pull/28), [tomplus](https://github.com/tomplus))

* feat: make function `load_kube_config` asynchronous
* feat: function to auto-refresh gke token
* feat: remove synchronous libraries from dependencies

* feat: watch stops the iterator for empty responses and do not process ERROR responses ([22](https://github.com/tomplus/kubernetes_asyncio/pull/22), [olitheolix](https://github.com/olitheolix))
* feat: replace urllib3 by http.client in e2e initializer ([20](https://github.com/tomplus/kubernetes_asyncio/pull/20), [tomplus](https://github.com/tomplus))
* feat: new example - tail.py ([19](https://github.com/tomplus/kubernetes_asyncio/pull/19), [tomplus](https://github.com/tomplus))
* feat: new example - simultaneously watch multiple event streams without threads ([13](https://github.com/tomplus/kubernetes_asyncio/pull/13), [olitheolix](https://github.com/olitheolix))
* fix: fix few typos in setup.py ([18](https://github.com/tomplus/kubernetes_asyncio/pull/18), [evemorgen](https://github.com/evemorgen))
* fix: requirement for requests and urllib3 version ([16](https://github.com/tomplus/kubernetes_asyncio/pull/16), [tomplus](https://github.com/tomplus))

* fix e2e and unit tests
* fix Watch, Stream