[ann] hackney 1.17.0

[Max Lapshin]

Wow, so with pool management it is a complete replacement for lhttpc?


Short question: I have several specific hacks to lhttpc:

1. very detailed timing response: how much time were waiting for
socket, for connecting, for first byte, for headers, etc.
2. our own internal socket source. It is a normal Socket, but we have
some communication before HTTP.  Is it possible to provide some kind
of transport module to hackney?