Projects are linked to one or more GitHub repositories. For example, if you have a product that is composed of many small services, each with its own repository, you may wish to link all of these repositories to one Codetree project.
The GitHub API requires read/write access in order to access your issues and register webhooks. However, Codetree does not read the contents of your private repositories.
Absolutely. All communication with our servers occurs over SSL and we encrypt all highly sensitive data (such as passwords and API tokens) in our database.