[Release] v3.5.0

[danbillson]

Summary

Adds support for location-based tax mode, trial period payment method requirements, and payout remittance references.

Changes

• Tax Mode: Added location value to TaxMode enum for automatic tax localization based on customer location
• Trial Periods: Added requiresPaymentMethod field to trial period types and entities; updated price operations to use TrialPeriod instead of TimePeriod
• Payouts: Added remittanceReference field to payout notification entity

All changes are non-breaking additions to existing types and entities.