Nydus-snapshotter v0.2.1 release

What's Changed

• mod: use fixed image-spec version by @bergwolf in #39
• fix daemon state check by @imeoer in #40
• process: fix shared umount on daemon destroy by @imeoer in #42
• fix the bug that daemon status is not fully serialized by @power-more in #41
• add cleanup_on_close config option by @power-more in #41
• add StatusCode in handleMountError by @power-more in #41
• converter: fix incomplete unpack by @imeoer in #43

New Contributors

• @power-more made their first contribution in #41

Full Changelog: v0.2.0...v0.2.1