v0.2

Primarily a bug fix release due to 51e8137.

What's Changed

• Introduce build target initramfs.gz by @haesbaert in #83
• Stash the active backend in quark_queue_stats{} by @haesbaert in #84
• Fix a kprobe breakage introduced recently by @haesbaert in #85

Full Changelog: https://github.com/elastic/quark/commits/v0.2