singles: include the time types in MagnumMath.

Because why not, they're not that big and they're very useful, especially
in combination with the std::chrono compatibility.

doc/namespaces.dox

@@ -113,10 +113,12 @@ more information.
     @endcode
 @par
     If you need the deinlined symbols to be exported from a shared library,
-    @cpp #define MAGNUM_EXPORT @ce as appropriate. In addition, contents of the
-    @ref GlmIntegration and @ref EigenIntegration libraries except for the
-    @ref Magnum/EigenIntegration/DynamicMatrixIntegration.h header are included
-    as well --- opt-in by specifying either
+    @cpp #define MAGNUM_EXPORT @ce as appropriate. The STL compatibility bits
+    for time types are included as well --- opt-in with
+    @cpp #define MAGNUM_MATH_STL_COMPATIBILITY @ce before including the file.
+    Contents of the @ref GlmIntegration and @ref EigenIntegration libraries
+    except for the @ref Magnum/EigenIntegration/DynamicMatrixIntegration.h
+    can be opted in by specifying either
     @cpp #define MAGNUM_MATH_GLM_INTEGRATION @ce or
     @cpp #define MAGNUM_MATH_EIGEN_INTEGRATION @ce before including the file.
     Including it multiple times with different macros defined works as well.

src/Magnum/Math/Time.h

@@ -31,7 +31,9 @@
  * @m_since_latest
  */
 
+#ifndef CORRADE_SINGLES_NO_DEBUG
 #include <Corrade/Utility/Utility.h>
+#endif
 
 #include "Magnum/Magnum.h"
 #include "Magnum/visibility.h"
@@ -396,6 +398,7 @@ template<class T> template<class U> constexpr Nanoseconds<T>::Nanoseconds(Unit<S
 
 template<class T> template<class U> constexpr Seconds<T>::Seconds(Unit<Nanoseconds, U> value) noexcept: Unit<Math::Seconds, T>{T(static_cast<long double>(U(value))/1000000000.0l)} {}
 
+#ifndef CORRADE_SINGLES_NO_DEBUG
 /**
  * @debugoperator{Nanoseconds}
  * @m_since_latest
@@ -407,6 +410,7 @@ MAGNUM_EXPORT Utility::Debug& operator<<(Utility::Debug& debug, const Unit<Nanos
  * @m_since_latest
  */
 MAGNUM_EXPORT Utility::Debug& operator<<(Utility::Debug& debug, const Unit<Seconds, Float>& value);
+#endif
 
 }}
 

src/singles/MagnumMath.hpp

@@ -24,9 +24,11 @@
         #include <MagnumMath.hpp>
 
     If you need the deinlined symbols to be exported from a shared library,
-    `#define MAGNUM_EXPORT` as appropriate. In addition, contents of the
-    GlmIntegration and EigenIntegration libraries are included as well ---
-    opt-in by specifying either `#define MAGNUM_MATH_GLM_INTEGRATION` or
+    `#define MAGNUM_EXPORT` as appropriate. The STL compatibility bits for time
+    types are included as well --- opt-in with
+    `#define MAGNUM_MATH_STL_COMPATIBILITY` before including the file. Contents
+    of the GlmIntegration and EigenIntegration libraries can be opted in by
+    specifying either `#define MAGNUM_MATH_GLM_INTEGRATION` or
     `#define MAGNUM_MATH_EIGEN_INTEGRATION` before including the file.
     Including it multiple times with different macros defined works as well.
 
@@ -309,6 +311,8 @@ typedef Math::Range1D<Int> Range1Di;
 typedef Math::Range2D<Int> Range2Di;
 typedef Math::Range3D<Int> Range3Di;
 typedef Math::Frustum<Float> Frustum;
+typedef Math::Nanoseconds<Long> Nanoseconds;
+typedef Math::Seconds<Float> Seconds;
 typedef Math::Vector2<Half> Vector2h;
 typedef Math::Vector3<Half> Vector3h;
 typedef Math::Vector4<Half> Vector4h;
@@ -397,6 +401,7 @@ typedef Math::Frustum<Double> Frustumd;
 #include "Magnum/Math/RectangularMatrix.h"
 #include "Magnum/Math/Swizzle.h"
 #include "Magnum/Math/Tags.h"
+#include "Magnum/Math/Time.h"
 #include "Magnum/Math/TypeTraits.h"
 #include "Magnum/Math/Unit.h"
 #include "Magnum/Math/Vector.h"
@@ -408,6 +413,10 @@ typedef Math::Frustum<Double> Frustumd;
 #include "Magnum/Math/Algorithms/KahanSum.h"
 #include "Magnum/Math/Algorithms/Qr.h"
 //#include "Magnum/Math/Algorithms/Svd.h" // TODO needs Optional and Triple
+#ifdef MAGNUM_MATH_STL_COMPATIBILITY
+// {{includes}}
+#include "Magnum/Math/TimeStl.h"
+#endif
 #ifdef MAGNUM_MATH_GLM_INTEGRATION
 // {{includes}}
 #include "Magnum/GlmIntegration/Integration.h"
@@ -424,4 +433,5 @@ typedef Math::Frustum<Double> Frustumd;
 // {{ includes }}
 #include "Magnum/Math/Functions.cpp"
 #include "Magnum/Math/Packing.cpp"
+/* Time.cpp is just debug output operators, not included */
 #endif