As there is no Magnum::TypeTraits struct anymore, there is no need to
have redundant name in it. Hopefully Doxygen will handle the difference
between this and Corrade's TypeTraits.h properly.
* Merged constExpressions() into other test cases, simplified the test
a lot and removing duplicate code.
* Fixed Vector3::xy(), Vector3::xy() and Vector3::xyz() constexpr
overloads, they now return copy instead of reinterpret_cast
reference. The copy is const to make constexpr operations working
even on returned subclass, e.g.:
constexpr Vector4 a;
constexpr Float b = a.xyz().y();
It is now possible to implicitly create one-element Vector and also
explicitly fill more-element Vector with one value without any ambiguous
overload conflicts:
Vector<1, int> a1 = 1; // calls implicit constructor
//Vector<3, int> a3 = 1; // error!
Vector<1, int> b1(1); // still calls the implicit constructor, the
// explicit is disabled for one-element vector
Vector<3, int> b3(1); // calls the explicit "filling" constructor,
// the implicit is disabled for only one argument
The downside of this is that now specifying improper element count in
constructor doesn't lead to static_assert with human readable error, but
rather cryptic "no match" error.
The comparisons have also SIMD instructions returning bool vector, this
future-proofs them. Also it isn't confusing anymore (a < b is true when
all are less or just one?).
Also updated all dependent classes to follow the change, such as Color
and Rectangle. Backwards compatibility for GCC 4.6 (with lack of support
for delegating constructors) will be done as non-constexpr constructor
using operator=().
Removing of another <*stream> #include leads to more compilation time
saving, now from ~5:12 to ~4:55. Another compilation time improvements
will now be possible only by using Clang's modules, I don't know where
to optimize further (except for getting rid of <sstream> in tests).
Magnum.h now doesn't include anything except OpenGL headers, thus
changes in Math library don't trigger recompilation of everything, but
only of things really depending on it.
Math constants moved to separate file for similar reasons, de-inlined
some functions to remove the need for some #includes.
Currently moved only non-square functionality from Matrix there. Also
static constant members such as row/column count and size are now
lowercase, as they are variables, not types.