v1.4.0

Version 1.4.0

What's Changed

• feat:Add traffic_source for Notification Settings by @vifer in #83
• feat: API sync by @vifer in #85
• feat: Adding new payment methods notifications by @vifer in #86
• Fix: Transaction Preview Price by @davidgrayston-paddle in #89
• fix: Allow null product IDs in transaction preview responses by @davidgrayston-paddle in #90
• fix: Handle empty custom data by @davidgrayston-paddle in #91
• feat: Simulator API by @vifer in #84
• docs: Release v1.4.0 by @davidgrayston-paddle in #93

Full Changelog: v1.3.1...v1.4.0