v0.9.4

• Introduce "pganalyze-collector-helper": Setuid Binary that can be used to run
  privileged actions when the main collector is running as non-root (the default)
• Determine the correct distance between two collector runs (instead of assuming 600 seconds)
• Better monitoring for self-hosted systems
  • Collect missing Disk I/O statistics
  • Fix calculation logic for disk utilization
  • Collect kernel version and architecture
  • Don't monitor the local loopback network interface
  • Sort disk/partition/network interface names before output
  • Don't collect local system information when monitoring remote hosts
• Packaging
  • Update to Go 1.7
  • Systemd: Enforce memory limit of 256mb for the collector