* v8: upgrade to 3.20.11
* uv: upgrade to v0.11.7
* buffer: return offset for end of last write (Trevor Norris)
* build: embed the mdb_v8.so into the binary (Timothy J Fontaine)
* build: fix --without-ssl build (Ben Noordhuis)
* child_process: add 'shell' option to .exec() (Ben Noordhuis)
* dgram: report send errors to cb, don't pass bytes (Ben Noordhuis)
* fs: write strings directly to disk (Trevor Norris)
* https: fix default port (Koichi Kobayashi)
* openssl: use asm for sha, md5, rmd (Fedor Indutny)
* os: add mac address to networkInterfaces() output (Brian White)
* smalloc: introduce smalloc module (Trevor Norris)
* stream: Simplify flowing, passive data listening (streams3) (isaacs)
* tls: asynchronous SNICallback (Fedor Indutny)
* tls: share tls tickets key between cluster workers (Fedor Indutny)
* util: don't throw on circular %j input to format() (Ben Noordhuis)