Migration guide for v6

⚠️ Changed

• Dropped support for Python version 3.4 and 3.5 (#881). We now support Python 2.7 or 3.6+.
• Fixed mistyped names for two OAuth exceptions: UnsupportedGrantTypError->UnsupportedGrantTypeError and UnsupportedResponseTypError->UnsupportedResponseTypeError (#872).

Deprecated

• Deprecate save method on resources (#887). Use modify instead.

  # Before
  customer = stripe.Customer.retrieve("cus_123")
  customer.email = "example@test.com"
  customer.save()
  
  # After
  stripe.Customer.modify("cus_123", email="example@test.com")

⚠️ Removed

• Removed Orders resource (#882).
• Removed SKU resource (#883).