Release v3.0.21

Optimized the code of `metric` and added some unit cases. (#5719)

Release v3.0.18

Instead of classes and functions of `Hyperf\Utils` (#5674)


Co-authored-by: 李铭昕 <[email protected]>

Release v3.0.17

Use `Hyperf\Stringable\Str` instead of `Hyperf\Utils\Str` (#5634)

Release v3.0.16

Use `Hyperf\Coroutine\Coroutine` instead of `Hyperf\Utils\Coroutine` …

…(#5623)

Release v3.0.15

Use `Hyperf\Collection\Collection` instead of `Hyperf\Utils\Collectio…

…n`. (#5593)

* Format code

* Use `Hyperf\Collection\Collection` instead of `Hyperf\Utils\Collection`.

* Use `Hyperf\Collection\collect` instead of `collect`.

Release v3.0.7

Fixed bug that metric middleware cannot work well when encountered an…

… exception. (#5428)

Release v3.0.6

Fix the path of `CoroutineServerStats` (#5378)

Release v3.0.5

Fix the bug that `undefined swoole_cpu_num()` on `swow` (#5355)

Release v3.0.3

Collect the metric of `Server::stats` by loop (#5326)

Release v3.0.2

Fix the parameter `$timeout` of `Timer::tick()` in `hyperf/metric` (#…

…5307)


Co-authored-by: 李铭昕 <[email protected]>