braintree

## v0.8.0 2017-08-24

### Enhancements

* [Braintree.ErrorResponse] Include full transaction details in the
  `ErrorResponse` struct. This displays the underlying reason a request failed,
  helping developers diagnose failing requests.
* [Braintree.HTTP] Ability to optionally pass environment and API keys as
  options to all functions doing API calls. The default behaviour of reading
  from the global config is kept if those keys are not passed as arguments.
  Submitted by @manukall and @nicolasblanco

### Changes

* [Braintree.Construction] Use `new/1` to build structs, rather than the unusual
  `construct/1` function.

### Bug Fixes

* [Braintree.HTTP] Catch and return `400 Bad Request` error tuples, rather than
  generating a case clause error.

## v0.7.0 2016-09-20

### Enhancements

* [Braintree.ClientToken] Set the default client token version to `2`.
* [Braintree.Discount] Add support for discounts
* [Braintree.AddOn] Add support for add-ons
* [Braintree.SettlementBatchSummary] Add support for settlement reports
* [Braintree.Subscription] Support updating with `update/2`
* [Braintree.Subscription] Convert add-on and transaction lists to structs

### Changes

* [Braintree.XML] Strictly accept maps for generation, not keyword lists.

### Bug Fixes

* [Braintree.XML] Correctly handle decoding entities such as `&`, `>`
  and `<`.
* [Braintree.XML] Fix encoding XML array values
* [Braintree.XML] Add encoding of binaries

## v0.6.0 2016-08-10

### Enhancements

* [Braintree.HTTP] Remove dependency on HTTPoison! Instead Hackney is used
  directly.
* [Braintree.HTTP] Configuration options can be provided for Hackney via
  `http_options`.
* [Braintree] Support `{:system, VAR}` for configs
* [Braintree.XML] Support for parsing top level arrays. Some endpoints, notably
  `plans`, may return an array rather than an object
* [Braintree.Plan] Added module and `all/0` for retrieving billing plans
* [Braintree.Customer] Enhanced with `find/1`
* [Braintree.Subscription] Enhanced with `cancel/1` and `retry_charge/1`

### Bug Fixes

* [Braintree.XML.Entity] XML entities are automatically encoded and decoded.
  This prevents errors when values contain quotes, ampersands, or other
  characters that must be escaped
* [Braintree.Customer] Return a tagged error tuple for `delete/1`
* [Braintree.Transaction] Use the correct `paypal` field for `Transaction` responses

## v0.5.0 2016-06-13

* Added: Paypal endpoints for use with the vault flow [TylerCain]
* Added: Construct Paypal accounts from customer responses
* Added: Support `submit_for_settlement/2` to Transaction
* Added: Typespec for the Transaction struct
* Fixed: Typespec for the CreditCard struct
* Fixed: Include xmerl in the list of applications to ensure that it is packaged
  with `exrm` releases.

## v0.4.0 2016-04-20

* Added: Available only during testing, `TestTransaction`, which can be used to
  transition transactions to different states.
* Added: Add `find`, `void`, and `refund` on `Transaction`. [Tyler Cain]
* Added: Add support for `PaymentMethod`, `PaymentMethodNonce`. [Tyler Cain]
* Added: Basic support for subscription management, starting with `create`.
  [Ryan Bigg]

## v0.3.2 2016-02-26

* Fixed: Log unprocessable responses rather than inspecting them to STDOUT.
* Fixed: Convert 404 and 401 responses to error tuples, they are common problems
  with misconfiguration.

## v0.3.1 2016-02-18

* Fixed: Lookup the certfile path at runtime rather than compile time. This
  fixes potential build errors when pre-building releases or packaging on
  platforms like Heroku.

## v0.3.0 2016-02-17

* Fixed: Raise helpful errors when missing required config
* Added: Client token module for generating new client tokens [Taylor Briggs]

## v0.2.0 2016-02-05

* Added: Support for updating and deleting customers.
* Added: A `Nonces` module for help testing transactions.
* Changed: Include testing support `Braintree.Testing.CreditCardNumbers` as well as
  `Braintree.Testing.Nonces` in `lib/testing`, making it available in packaged
  releases.
* Fixed: Trying to call `XML.load` on empty strings returns an empty map.
* Removed: The `__using__` macro has been removed from HTTP because the naming
  conflicted with `delete` actions. An equivalent macro will be introduced in
  the future.

## v0.1.0 2016-02-03

* Initial release with support for `Customer.create` and `Transaction.sale`.