v0.5.2

This will be the final Swift 2.x release. Changes since v0.5.1:

• Migrated to Swift 2.3.
• Fixed an error that occurred when archiving an application that links to this library. (#66)
• Fixed spurious and sometimes catastrophic “Could not build module” compiler errors. (#63)
• MBForwardGeocodeOptions’ allowedScopes property is now available in Objective-C. (#63)
• Added support for the Landmark scope, which is a subset of the PointOfInterest scope. (#81, #86)
• Fixed a crash when using RectangularRegion.allowedRegion. (#84)
• Fixed a crash that could occur when the user is connected to a captive network. (#71)
• Fixed a crash that occurred when a request failed due to rate limiting. (#92)
• Properties such as formattedAddressLines now recognize the reversed and delimiterless address format used in Chinese. (#77)
• The user agent string sent by the Mac version of this library now says “macOS” instead of “OS X”. (#58)