Update `sendDaikin152()` status to Stable.
Update `sendDaikin152()` status to Stable.

Confirmed in https://github.com/crankyoldgit/IRremoteESP8266/issues/873#issuecomment-532571461
markszabo/IRremoteESP8266,markszabo/IRremoteESP8266,markszabo/IRremoteESP8266,markszabo/IRremoteESP8266