bump v0.3.0
README: add digg
nsqd: de-flake TestEphemeralTopicsAndChannels
nsqd: fix nil logger for benchmarks
nsqd: return output_buffer_* in IDENTIFY response
Merge pull request #479 from mreiferson/nsqd_output_buffer_479

nsqd: return output buffer settings in IDENTIFY response
util: speed up failure path of ByteToBase10
Merge pull request #505 from iand/master

util: speed up failure path of ByteToBase10
apps/nsq_stat: add rate status
Merge pull request #507 from xiaost/nsq-stat-add-rate-status

apps/nsq_stat: add rate status
nsqadmin: make importable
nsqadmin: close notification response
nsqd/nsqlookupd: add/use RealTCPAddr/RealHTTPAddr
nsqd: print string when theres an error parsing lookupd response
nsqadmin: fix logging name
nsqadmin: add RealHTTPAddr
nsqadmin: add /topics route
nsqadmin: add test for /topics
nsqadmin: add route for /topics/*
nsqadmin: add test for /topics/*