BUILD: Fixed SSE flag not being activated for debug builds

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
BUILD: Added gcc-specific "align" attribute

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
GENERATORS: Added missing "align" attribute to generators base class

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
GENERATORS: Moved "align" attribute

This way both msvc and gcc should support it.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
TESTS: Also using references in tests specific comparison operators

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
COMMON: Using C11 aligned allocators on GCC

Signed-off-by: Gama <misept.dieseneuf@gmail.com>