The original authors of LIBMF are:
    Chih-Jen Lin
    Yu-Chin Juan
    Wei-Sheng Chin
    Yong Zhuang
    Bo-Wen Yuan
    Meng-Yuan Yang

The functions malloc_aligned() and free_aligned() in file src/reco-utils.h are
based on an answer in Stack Overflow: https://stackoverflow.com/a/6563989/3152208
Credit goes to the author of this answer, "Node"
(https://stackoverflow.com/users/754373/node).
