Bug#1074847: biosig 2.6.1 provides bug fixes

[Alois Schlögl]

biosig 2.6.1 is released and tries to address these bugs #1074847, #1076868

Downloads are available from here:
https://biosig.sourceforge.net/download.html
https://sourceforge.net/projects/biosig/files/BioSig%20for%20C_C%2B%2B/src/biosig-2.6.1.src.tar.xz