Peak detection

[lwiniwar]

The current implementation of peak detection utilizes a moving window-local maximum detection with a suppliable window size. However, in reality something like Gaussian decomposition is often used. We can try to look for a library that supports this (e.g. from the IceSAT domain or some fullwave lib like pulsewaves) and see how it performs. In any case, we will keep the output to (zipped) text so that users can implement their own peak detection.