MaxBytesReader is similar to net/http.MaxBytesReader, but lets us choose how to handle an overflow by providing an error.

NewPlugin loads and initializes a new plugin.

NewRegistry creates a new registry which watches the given dir root for new plugins, and adds them.

Plugin is the implementation of a plugin.

PluginResponse is an extension of xfer.Response that allows plugins to send the shortcut reports.

Registry maintains a list of available plugins by name.

ReportPublisher is an interface for publishing reports immediately.