v3.2.1

Breaking change

• config has changed significantly to separate scraper definitions from the download flow. See readme.
• separate reusable options from one-offs so scrape now has three parameters: config, options and params.
• scraper is invoked differently. scrape(config, options, params) yields a query and start, where start triggers the scraper and folder creation. (#15)

Enhancements/fixes

• add limit field on parse scraper configs (#9)
• validate scraper names & input keys (#10)
• add log file rotation
• travis ci now supports tests on macos, windows coming soon!