v0.18.0

What's Changed

• ef965e6: release: v0.18.0 (@ra0x3)(https://github.com/ra0x3)
• 21ee4eb: fix: address cron pid race condition (@ra0x3)(https://github.com/ra0x3)
• a289eba: test: add docker tests (@ra0x3)(https://github.com/ra0x3)
• c583bd3: enhancement: update rustfmt usage (@ra0x3)(https://github.com/ra0x3)
• cf407d4: enhancement: use gnuplot for sysg inspect (@ra0x3)(https://github.com/ra0x3)

Full Changelog: https://github.com/ra0x3/systemg/compare/v0.17.0..v0.18.0