[upcoming branch] Request stream error masks potential server response

[natevw]

If CouchDB gets upset, it may simply close the incoming pipe as it sends a repsonse. Rather than getting the response as an error, fermata returns only:

{ Error: write EPIPE
    at exports._errnoException (util.js:1007:11)
    at WriteWrap.afterWrite (net.js:793:14) code: 'EPIPE', errno: 'EPIPE', syscall: 'write' }

[natevw]

To clarify, I think this is talking about a situation where the request is still in progress when the server decides to send its response.

[natevw]

This is related to #52 as well.