Created log file of arguments passed to the program, including timestamp
Changed file-naming, including the addition of flag to specify output file path
Reorganised and annotated argument parser for easier reading/editing

Altered ANOVA analysis to consider 8 variables instead of 4 clustered vars.
Merge remote-tracking branch 'origin/master'

remote contained updated annotations/comments of program
master contained updates of analysis, CLI parser, file logging, etc