It is now possible to specify a timeout when opening a TCPSocket.

[hiroeorz]

By specifying as follows, you can now specify the timeout time in seconds when MQTTClient opens a TCPSocket.

client = MQTT::Client.connect(
  :host => 'myserver.example.com',
  :connect_timeout => 15
)

The default timeout period is 30 seconds.

[njh]

Re-opening to trigger GitHub action checks (hopefully!)