v6.0.0-rc.22

What's Changed

• fix(http1): fix rare missed write wakeup on connections by @0x676e67 in #974
• fix(proxy): fix 407 proxy auth failures for HTTP requests by @0x676e67 in #975
• feat(rt): add Timer::now() method to allow overriding the instant returned by @0x676e67 in #976
• perf(uri): avoid double copying during URI percent encoding by @0x676e67 in #977

Full Changelog: v6.0.0-rc.21...v6.0.0-rc.22