• @KyleAMathews added support for creating pages from JSON/YAML/TOML files. This can be incredibly useful if you're integrating Gatsby with a 3rd-party system. Write out the data as JSON files and they'll be auto-converted into Gatsby pages. YAML & TOML are very handy for maintaining complex data for a page by hand.
• @scottnonnenberg added an option to disable building a bundle.js for production. This is helpful to minimize the amount of data people download for your site and for very large sites (e.g. 1000+ pages), not compiling the JS can save a considerable amount of time.