Implemented the "dateOnly" and "dateAndTime" static formatter in the DateFormatter+Formatter extension.

Sources/Extensions/DateFormatter+Formatter.swift

@@ -0,0 +1,34 @@
+import Foundation
+
+extension DateFormatter {
+    
+    // MARK: Formatters
+    
+    static let dateOnly = {
+        let formatter = DateFormatter()
+        
+        formatter.timeZone = .init(secondsFromGMT: 0)
+        formatter.dateFormat = .Format.yearMonthDay
+        
+        return formatter
+    }()
+    
+    static let dateAndTime = {
+        let formatter = DateFormatter()
+        
+        formatter.timeZone = .init(secondsFromGMT: 0)
+        formatter.dateFormat = .Format.dateAndTimeWithMicroseconds
+        
+        return formatter
+    }()
+
+}
+
+// MARK: - String+Format
+
+private extension String {
+    enum Format {
+        static let yearMonthDay = "yyyy-MM-dd"
+        static let dateAndTimeWithMicroseconds = "yyyy-MM-dd'T'HH:mm:ss.SSS"
+    }
+}