Actually do logging correctly.

Use the logger not just the root logger.

custom_components/plex_webhooks/__init__.py

@@ -29,7 +29,7 @@
 
 async def handle_webhook(hass, webhook_id, request):
     """Handle webhook callback."""
-    logging.debug('Got plex webhook.')
+    _LOGGER.debug('Got plex webhook.')
 
     data = {}
 
@@ -43,7 +43,7 @@ async def handle_webhook(hass, webhook_id, request):
             if part.name == 'payload':
                 data = await part.json()
     except ValueError:
-        logging.warn('Issue decoding webhook: ' + part.text())
+        _LOGGER.warn('Issue decoding webhook: ' + part.text())
         return None
 
     event = data['event']
@@ -56,21 +56,21 @@ async def handle_webhook(hass, webhook_id, request):
     grabbed = ['library.new']
 
     if event in playing:
-        logging.debug('Plex started playing')
+        _LOGGER.debug('Plex started playing')
         data['status'] = 'PLAYING'
         data['playerUuid'] = data['Player']['uuid']
     elif event in stopped:
-        logging.debug('Plex stopped playing')
+        _LOGGER.debug('Plex stopped playing')
         data['status'] = 'STOPPED'
         data['playerUuid'] = data['Player']['uuid']
     elif event in grabbed:
-        logging.debug('Plex got new media')
+        _LOGGER.debug('Plex got new media')
         data['status'] = 'GRABBED'
 
     hass.bus.async_fire(EVENT_RECEIVED, data)
 
 async def async_setup(hass, config):
-    logging.debug('Initing Plex Webhooks!')
+    _LOGGER.debug('Initing Plex Webhooks!')
     webhook_id = config[DOMAIN][CONF_WEBHOOK_ID]
     hass.components.webhook.async_register(
         DOMAIN, "Plex", webhook_id, handle_webhook