Non-blocking publish

[codecov[bot]]

Codecov Report

Patch coverage: 83.24% and project coverage change: +0.20 :tada:

Comparison is base (143e8f0) 65.60% compared to head (1880069) 65.81%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #137 +/- ## ========================================== + Coverage 65.60% 65.81% +0.20% ========================================== Files 54 54 Lines 8979 9103 +124 ========================================== + Hits 5891 5991 +100 - Misses 3088 3112 +24 ``` | [Impacted Files](https://codecov.io/gh/ntex-rs/ntex-mqtt/pull/137?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs) | Coverage Δ | | |---|---|---| | [src/v3/sink.rs](https://codecov.io/gh/ntex-rs/ntex-mqtt/pull/137?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs#diff-c3JjL3YzL3NpbmsucnM=) | `39.90% <78.04%> (+6.57%)` | :arrow_up: | | [src/v5/sink.rs](https://codecov.io/gh/ntex-rs/ntex-mqtt/pull/137?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs#diff-c3JjL3Y1L3NpbmsucnM=) | `42.35% <82.35%> (+4.68%)` | :arrow_up: | | [src/v3/shared.rs](https://codecov.io/gh/ntex-rs/ntex-mqtt/pull/137?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs#diff-c3JjL3YzL3NoYXJlZC5ycw==) | `71.36% <82.50%> (+2.10%)` | :arrow_up: | | [src/v5/shared.rs](https://codecov.io/gh/ntex-rs/ntex-mqtt/pull/137?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs#diff-c3JjL3Y1L3NoYXJlZC5ycw==) | `71.27% <87.23%> (+2.49%)` | :arrow_up: | | [src/topic.rs](https://codecov.io/gh/ntex-rs/ntex-mqtt/pull/137?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs#diff-c3JjL3RvcGljLnJz) | `90.26% <91.66%> (-0.36%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ntex-rs)

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