skywalking_agent 0.7.0

Apache SkyWalking PHP Agent.

The PHP Agent for Apache SkyWalking, which provides the native tracing abilities for PHP project.

License: Apache-2.0


## What's Changed
* Start 0.7.0 development. by @jmjoy in
* Add more info for error log. by @jmjoy in
* Fix amqplib and predis argument problems. by @jmjoy in
* Add Memcache plugin. by @jmjoy in
* Refactor mysqli plugin, support procedural api. by @jmjoy in
* Fix target address in cross process header. by @jmjoy in
* Release SkyWalking PHP 0.7.0 by @jmjoy in

**Full Changelog**: