Brings OPT-36 (#229) and TEST-37 (#231) onto release/1.0, which keeps SAFETY-128 (#228). No textual conflicts. CHANGELOG: the SAFETY-128 entry moved out of the released 0.20.0 section into "Not in a release yet" above ## 0.20.1; the 0.20.0 and 0.20.1 sections are identical to master. Co-Authored-By: Claude <noreply@anthropic.com>