fix handlers_in_progress_count in mutators
log failed extension mutator name instead of empty curly braces
[exited] fixed sensu popen nil exit status
Merge pull request #559 from portertech/exited

Fixed sensu popen nil exit status
Merge pull request #554 from piavlo/bug/handlers_in_progress_count

fix handlers_in_progress_count in mutators
[extension] use mutator extension definition in error messages
Merge pull request #561 from portertech/extension

[extension] use mutator extension definition in error messages
[valid_payload] removed result validation, determined case of nil exit status
[valid_payload] trust the message bus
Merge pull request #562 from portertech/valid_payload

Trust the message bus
[debug_handler] stop double json encoding event data
Merge pull request #563 from portertech/debug_handler

[debug_handler] stop double json encoding event data
[redact] redact passwords in client data
[redact] redact passwords in config loading diffs
[redact] remove check command_executed, as it may contain passwords
[redact] test keepalive scrub'n
Merge pull request #564 from portertech/redact

Redact passwords in log events and client keepalives