Add self-typing generics to ElasticsearchContainer (#963)

Fixes #962

Upgrade bintray gradle plugin

Resolves bintray/gradle-bintray-plugin#253

Point readers to 'Releases'

Guard against potential NPE if startup fails before container creation (

#876)

remove Netty classes from OkHttpInvocationBuilder (#869)

* remove Netty classes from OkHttpInvocationBuilder

* use `BufferedReader`

* simplify JsonSink

* code cleanup

Add support for docker hub private registry credentials (#845)

* Fix authentication for use of base64-encoded credentials and credential helpers with private registries and docker hub

* Update following review by @bsideup

* Update to docker-java 3.1.0-rc-4

* fix shading

Update changelog

Revert changelog mention of #802

Update changelog for 1.8.1 release

Update changelog for 1.8.0 release