Fix #281

Provide a request scope.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Fix #279

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Add documentation for #279

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Document #281

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>