v0.2.4 Release

What's Changed

• [easylog][feat]set get options by @qicosmos in #415
• support fmt/std::format by @qicosmos in #417
• [easylog][feat]add more Severity, fix mac console color by @qicosmos in #418
• [easylog][doc]add doc for easylog by @qicosmos in #419
• [easylog][doc]update sidebar by @qicosmos in #421
• [easylog][improve]remove some define by @qicosmos in #422
• [struct_pack][feat] support bitset by @poor-circle in #420
• [coro_http_client][doc]add doc for coro_http_client by @qicosmos in #423
• [coro_http_client][fix] release buf by @qicosmos in #424

Full Changelog: v0.2.3...v0.2.4