v1.2.0

Backward compatibility Break

• Update namespace (2204df6) (28f8abe)

Remove

• PHP 7.0 is no longer supported (3dc5bcd)

Enhancement

• Add visibility on all constants (0176469)
• Add ClientConfig (d90b9dc)
• Optimize Client (9229224)
• Update tests and examples code (959a21d) (08531ac)

Upgrade Guide

English: https://mqtt.simps.io/#/en/upgrade/1.2
Chinese: https://mqtt.simps.io/#/zh-cn/upgrade/1.2