Intern common Train-Case header names - #2266

Intern common Train-Case header names#2266

hyperxpro merged 4 commits into

AsyncHttpClient:mainAsyncHttpClient/async-http-client:mainfrom

maygemdev:perf/train-case-header-interningmaygemdev/async-http-client:perf/train-case-header-interningCopy head branch name to clipboard