version can now return "2.3.0", "2.3.1"

What changed

Producer-side tools call this additive. It breaks exhaustive switches, strict parsers and generated client enums.

Affects version on three_d_secure_details reachable from 100 operations.

New values: 2.3.0, 2.3.1.

can now return "2.3.0", "2.3.1"

Who is affected

Code that reads Stripe's three_d_secure_details objects, used by 159 Stripe operations.

Before and after

Code that breaks

switch (response.version) {
  // existing branches …
  // no branch for "2.3.0"
  // no branch for "2.3.1"
  default:
    throw new Error("unexpected version");
}

Based on Stripe’s published API specification. How severity is decided.