Tweaked RingBuffer to be generic#1

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Commits on Oct 13, 2019

add support for macOS, used clang as compiler
Wouter Ensink
committed
made the ringbuffer class generic(but only with float, double and long double) and updated the code style to more modern C++14
Wouter Ensink
committed
Updated to support changes in ringbuffer class. Code also made cleaner, but now requires C++17.
Wouter Ensink
committed
added trailing return type for main
Wouter Ensink
committed