Use <chrono> in Timer
This uses C++11's to re-implement Timer in a portable and much simpler format.
I also put Timer in the LibUtilities namespace, since I don't see any good reasons for why it should be loose in the Nektar namespace.
This uses C++11's to re-implement Timer in a portable and much simpler format.
I also put Timer in the LibUtilities namespace, since I don't see any good reasons for why it should be loose in the Nektar namespace.