Missing validation schema

[emmekappa]

I'm getting this warning while deploying using serverless cli

Serverless: Configuration warning at 'functions.cron.events[0].schedule': unrecognized property 'timezone'
Serverless:
Serverless: Learn more about configuration validation here: http://slss.io/configuration-validation

[klsetzer]

Any chance of getting this merged and a new version released to npmjs.com? With the upcoming "configValidationMode: error" feature, this will be needed.