bbfrederick/rapidtide: Version 2.0alpha25 - 5/3/21 checkpoint

(rapidtide) Fixed text file (nirs) processing. (rapidtide) Fixed a search range setting error. (rapidtide) Fixed the default method for global mean signal generation. (rapidtide) Fixed a crash when using the mutualinfo similarity metric. (rapidtide, io) Significant improvement to CIFTI handling - now properly read and write parcellated scalars and time series. (io) Vastly improved reading in arbitrarily large text files. (stats) Fixed a bug in getfracvals when you try to find the maximum value. (package) Began aggressive implementation of smoke tests (excercise as many code paths as possible to find crashers in neglected code - this is how the above bugs were found). (package) More logging refinement