* Add *.heapsnapshot to .gitignore (Krishna Raman)

 * runctl: don't attach runctl server in workers (Sam Roberts)

 * runctl: add heap-snapshot command (Krishna Raman)

 * run: support control and exit via node ipc (Sam Roberts)

 * run: fix --no-channel option (Sam Roberts)

 * control: refactor control channel naming (Sam Roberts)

 * runctl: clarify fork response and usage (Sam Roberts)

 * Allow master logging in --metrics mode (Ryan Graham)

 * Export supervisor's logger in worker processes (Ryan Graham)

 * cluster: use 0 as cluster master's worker id (Ryan Graham)

 * logger: only use log transformer in clustered mode (Ryan Graham)

 * cpu-start/stop: command line CPU profiling (Sam Roberts)

 * test: use a common debug wrapper (Sam Roberts)

 * debug: introduce a debug wrapper (Sam Roberts)

 * Generate useful default scope for statsd metrics (Ryan Graham)

 * Add %a and %h to core string expander (Ryan Graham)

 * Rename logname.generate to expander.expand (Ryan Graham)