Swift 4 and Xcode 9.0.1 Update

• Set Swift 3 Obj-C inference to Default
• Refactored substring to string slicing
• On a mock, set default content item to OK

Improvement of Error Usability

• Improved usability of errors
• Added code and message property in RequestError
• RequestError implemented Equatable protocol
• RequestError is equal if code and message are the same
• Defined static message for invalidURL, unparseableJSON, noURLResponse, nullJSON, and unknown cases
• Defined code for RequestError cases

Firebase REST API Implementation

• User can do authentication
• User can issue GET, POST, PUT, PATCH requests
• User can stream paths
• User can run transactions