pip > 1.5
click > 6.0

[database-postgresql]
psycopg2 >= 2.6

[input-driver-gpiozero]
gpiozero >= 1.0

[input-driver-sysfs]
gpiodaemon >= 0.5

[output-driver-gpiozero]
gpiozero >= 1.0

[output-driver-wiringpi]
wiringpi >= 2.3
