https://github.com/sourcegraph/sourcegraph
https://github.com/sourcegraph/sourcegraph-extension-api

https://github.com/sourcegraph/sourcegraph/blob/master/docs/architecture.md
https://github.com/sourcegraph/sourcegraph/blob/master/docs/storage.md
https://github.com/sourcegraph/sourcegraph/blob/master/docs/style.md
https://github.com/sourcegraph/sourcegraph/blob/master/docs/api.md