error, warn, info, and verbose log functions are not bind to the sanitized context

[mcamacho021]

Observed that the error, warn, info and verbose are removed from the context when the context object is sanitized to remove the "done" function.

The _extends() function in the IncomingMessage file is removing these functions. Only the "log" function is available in the context object.

It would be nice if we could use these log level functions.

Context object before sanitized;

Context object after sanitized:

[SwapnilBhosale]

Hey, I am also facing this issue. When we can expect this issue to be fixed ?
Is there any workaround ?

[SwapnilBhosale]

Created PR #29 Please merge and publish new version