* npm: Upgrade to 1.3.4

* v8: Upgrade to v3.20.2

* c-ares: Upgrade to piscisaureus/cares@805d153

* timers: setImmediate process full queue each turn (Ben Noordhuis)

* http: Add agent.get/request methods (isaacs)

* http: Proper KeepAlive behavior (isaacs)

* configure: fix the --without-ssl option (Nathan Rajlich)

* buffer: propagate originating parent (Trevor Norris)

* tls_wrap: return Error not throw for missing cert (Timothy J Fontaine)

* src: enable native v8 typed arrays (Ben Noordhuis)

* stream: objectMode transform should allow falsey values (Jeff Barczewski)

* slab_allocator: remove SlabAllocator (Trevor Norris)

* crypto: fix memory leak in LoadPKCS12 (Fedor Indutny)

* tls: export TLSSocket (Fedor Indutny)

* zlib: allow changing of level and strategy (Brian White)

* zlib: allow custom flush type for flush() (Brian White)