v0.2.2

What's Changed

• bugfix: Add shmtx unlock by @u5surf in #249
• Chore: add cpanm --notest in CI by @u5surf in #250
• Bugfix: fixed issues/228 Change the reffered source of upstream_state by @u5surf in #252
• Add histogram_bucket test by @u5surf in #256
• test: Add upstream check test by @u5surf in #264
• test: Fix upstream check test properly by @u5surf in #265
• Fix escaping filter_key in prometheus output by @u5surf in #260
• Fix vtsn.len type #269 by @u5surf in #270
• Release v0.2.2 by @u5surf in #272

Full Changelog: v0.2.1...v0.2.2