0.2.0

#Added

• directory CLI option to specify output CSV file directory.
• format CLI option to specify output CSV filename format.
• quiet CLI option to mute standard output.
• csv CLI option to enable CSV file output at launch.
• Signal handler listening for SIGUSR1 signals to toggle (enable/disable)
  CSV file output at runtime (e.g. pkill --signal=SIGUSR1 datalogger).
• build.rs build script to generate manpage & shell completions.
• Makefile to compile/install/uninstall datalogger alongside
  manpage & shell completions.

0.1.0

Initial release.