Patch release fixing reconnect logic

Immediate reconnect and eredis_sub improvements

Optimize parser and restore rebar 2 compatibility

Support AUTH with username and registered name for client process

Fix hex package missing files

The Nordix fork is now the official eredis package on Hex.

Fix builds with mix and other non-rebar tools

Update docs and version

* Restore backward compatibility with wooga/eredis (API functions
  and default reconnect timeout)
* Update CHANGELOG.md, README.md, AUTHORS.md and edoc
* Update version in app.src file

prefix logged messages with eredis so we know the source

Just don't run ipv6 test..