constexpr more stuff and clean up whitespace

test/date_test/year.pass.cpp

@@ -1,17 +1,17 @@
 // The MIT License (MIT)
-// 
+//
 // Copyright (c) 2015 Howard Hinnant
-// 
+//
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
-// 
+//
 // The above copyright notice and this permission notice shall be included in all
 // copies or substantial portions of the Software.
-// 
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -24,20 +24,20 @@
 // {
 // public:
 //     explicit constexpr year(int y) noexcept;
-// 
+//
 //     year& operator++()    noexcept;
 //     year  operator++(int) noexcept;
 //     year& operator--()    noexcept;
 //     year  operator--(int) noexcept;
-// 
+//
 //     year& operator+=(const years& y) noexcept;
 //     year& operator-=(const years& y) noexcept;
-// 
+//
 //     constexpr bool is_leap() const noexcept;
-// 
+//
 //     constexpr explicit operator int() const noexcept;
 //     constexpr bool ok() const noexcept;
-// 
+//
 //     static constexpr year min() noexcept;
 //     static constexpr year max() noexcept;
 // };