Release v3.4.0

Changes

• Restructure samples, add template sample for testing by @narekhovhannisyan in #38
• Bulk sending API by @narekhovhannisyan in #39
• Bump version to v3.4.0 by @vittorius in #44

Release v3.3.0

Changes

• Add support for Testing product API.
  • All public routes from API V2 are now available in SDK 🎉
  • Refer to the examples folder for the source code of this and other advanced examples.
• Security updates.