v19.6.1

• #1955 Forward request options when fetching V2 list pages
  • Fixes V2 fetch_next_page ignoring per-request API key and Stripe context overrides.
• #1956 Fix OAuth authorize response type defaulting
  • Fixes OAuthService#authorize_url to default response_type to code without overwriting an explicit value.
• #1950 Harden API requestor code against malicious URLs

See the changelog for more details.