v0.5.0 Release

• Upgrade dependencies
• Updated codebase to support Greenfield 1.1.0
• Resolve issues
• Add new functions:
  • Account:
    • multi_transfer
  • Bucket:
    • get_quota_update_time
    • storage_provider_by_bucket
  • Object:
    • list_object_policies
  • SP:
    • get_sp_by_operator_address