v6.0.0-rc.21

What's Changed

• chore(docs): improve API docs by @0x676e67 in #954
• perf(connector): disable Nagle's algorithm for TLS handshake by @0x676e67 in #955
• refactor(proxy): consolidate platform-specific modules into mod.rs by @0x676e67 in #956
• docs(retry): fix typo by @0x676e67 in #957
• ci: fix style check by @0x676e67 in #959
• build(deps): update windows-registry requirement from 0.5.0 to 0.6.0 by @0x676e67 in #962
• test(redirect): improve redirect cookie tests by @0x676e67 in #963
• refactor(dns): redesign DNS API for improved ergonomics and functionality by @0x676e67 in #968
• fix(proxy): support proxy auth where password is omitted by @0x676e67 in #971
• feat(uri): percent-encode spaces when building request URLs by @0x676e67 in #972

Full Changelog: v6.0.0-rc.20...v6.0.0-rc.21