• Updated minSdkVersion to 16. This is the minimum Android version to communicate over TLSv1.2, which is required to support a Payment Card Industry (PCI) Council mandate. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLSv1.2 for all HTTPS connections. To override the minSdkVersion, please see the readme.
• Update okhttp dependency to 3.2.0.
• Fixes issue related to non-ascii characters in user agent #271.