Add tree lights.

_data/.sonoff-s31.yaml

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+logger:
+  baud_rate: 0 # (UART logging interferes with cse7766)
+
+# Enable Home Assistant API
+api:
+
+ota:
+
+# Device Specific Config
+
+uart:
+  rx_pin: RX
+  baud_rate: 4800
+
+binary_sensor:
+  - platform: gpio
+    pin:
+      number: GPIO0
+      mode: INPUT_PULLUP
+      inverted: True
+    name: "${friendly_name} Button"
+    on_press:
+      - switch.toggle: relay
+  - platform: status
+    name: "${friendly_name} Status"
+
+sensor:
+  - platform: wifi_signal
+    name: "${friendly_name} WiFi Signal"
+    update_interval: 60s
+  - platform: cse7766
+    current:
+      name: "${friendly_name} Current"
+      accuracy_decimals: 1
+    voltage:
+      name: "${friendly_name} Voltage"
+      accuracy_decimals: 1
+    power:
+      name: "${friendly_name} Power"
+      accuracy_decimals: 1
+      id: my_power
+  - platform: total_daily_energy
+    name: "${friendly_name} Daily Energy"
+    power_id: my_power
+
+switch:
+  - platform: gpio
+    name: "${friendly_name} Relay"
+    pin: GPIO12
+    id: relay
+    restore_mode: ALWAYS_ON
+
+time:
+  - platform: sntp
+    id: my_time
+
+status_led:
+  pin: GPIO13

_data/tree-1-light-olive.yaml

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+substitutions:
+  device_name: tree-1-light-olive
+  dn: tree_1_light_olive
+  friendly_name: 1st Floor olive tree light
+
+<<: !include .esp8266.yaml
+<<: !include .wifi-oss.yaml
+
+<<: !include .sonoff-s31.yaml

_data/tree-1-light-xmas.yaml

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+substitutions:
+  device_name: tree-1-light-xmas
+  dn: tree_1_light_xmas
+  friendly_name: 1st Floor X-mas tree light
+
+<<: !include .esp8266.yaml
+<<: !include .wifi-oss.yaml
+
+<<: !include .sonoff-s31.yaml