2.1.6: minor bug fixes

• Minor bug fixes.

2.1.5: fix a rare problem involving the app caches directory

• Fix a very rare problem involving the app caches directory getting cleared. issue #163

2.1.4: Fix some localization issues

• Fix some localization issues. issue #164
• Update card.io library to 3.8.2.

2.1.3: Fix crashes; update zh-Hant

• Fix a crash involving PayPal accounts that have enabled two-factor authentication.
• Fix an iOS 8 crash.
• Make the HK dialect of Traditional Chinese the default dialect. (zh-Hant_TW remains available as well.)
• Update card.io library to 3.8.0.

2.1.2: Fix bug re item price

• Fix a bug involving the format of PayPalItem price in server requests.
  (The bug affected items whose fractional price was a multiple of 0.10)

2.1.1: Add Thai support, allow more BN Codes

• Add translations for Thai.
• Update card.io library to 3.7.1.
• Allow hyphens or underscores within the optional Build Notation code ("BN code").

2.1.0: add Multiple Items, clearAllUserData:, new logo

• Add support for Multiple Items per payment.
• Add clearAllUserData method to PayPalMobile.
• If app provides defaultUserEmail, defaultUserPhoneCountryCode, and/or defaultUserPhoneNumber,
  these will now be overridden by the user's most recent PayPal login.
• Update PayPal logo.
• Update card.io library to 3.7.0.

2.0.5: Update a Spanish translation

• Update a Spanish translation. issue #139

2.0.4: Eliminate references to IDFA (Advertising ID)

• Eliminate remaining references to IDFA (Advertising ID) to prevent potential issues for app approvals.

2.0.3: Better auth/capture support/docs; fix some currencies

• For payments using PayPalPaymentIntentAuthorize , the PayPalPayment.confirmation now includes authorization_id.
  issue #125
• Correct the handling of currencies HKD, HUF, and TWD.
  issue #130