[ANN} HTTPX 0.3.0 released!

https 0.3.0 has been released.

* https://gitlab.com/honeyryderchuck/httpx

httpx is a client library for making HTTP requests from Ruby. It has a
simple but highly configurable API to perform single and multiple requests
(supports HTTP/2 as well has 1.1 and 1.0). It also supports DNS over HTTPS.

### 0.3.0 Features

* Alt-Svc support;

### 0.3.0 Changes

* it regained JRuby support by ditching the "http_parser.rb" dependency
(incomplete, buggy and unmaintained) in favor of its own HTTP parser;
* it ditched "http_form-data" as a direct dependency, by moving its
functionality into an opt-in plugin;
* it now ships with a cheatsheet:
https://gitlab.com/honeyryderchuck/httpx/blob/master/CHEATSHEET.md , which
will make on boarding hopefully easier.