Everything what was in src/ is now in src/Corrade, everything from
src/Plugins is now in src/MagnumPlugins, everything from external/ is in
src/MagnumExternal. Added new CMakeLists.txt file and updated the other
ones for the moves, no other change was made. If MAGNUM_BUILD_DEPRECATED
is set, everything compiles and installs like previously except for the
plugins, which are now in MagnumPlugins and not in Magnum/Plugins.
Seems like an essential part of the toolbox -- we have Point, LineSegment
and Line and now we have also all "swept sphere" alternatives to them --
Sphere (swept "along" the point), Capsule (swept along line segment) and
Cylinder (swept along infinite line).
"Implemented" collision detection with point and sphere, which is just
simplified version of collision detection implemented for Capsule (i.e.
no need to check for cap cases).
* Calling enable_testing() only in root path.
* Using CORRADE_CXX_FLAGS instead of our own set to make things easier
to maintain.
* Various cleanup and reorganization.