0.4.0: Sorting

• Added convenience properties for accessing ordered keys and values
• Added convenience method for inserting new elements
• Added support for sorting (thanks to @aliHafizji)
• Rewritten the tests to use XCTest only and removed the dependency on Nimble which caused problems on Travis

0.3.0: Index-Based Insertion

• Added support for index-based insertion using insertElement(:, atIndex:)
• Improved fatal error messages for invalid indexes

0.2.0: Little Enhancements

• Added support for initializing the ordered dictionary with pairs
• Added support for the == operator
• Some other minor enhancements

0.1.0: Initial Release

• The initial release provides basic functionality
• Support for iOS and OS X
• Initial unit tests
• The API documentation is lacking and will be improved later