removes dr. menzies rdiv tests
changes era-logging logic
improves output of logged best values

- adds empty lines
- adds configurable xtile width
- normalizes ends of xtiles
moves around logging code
somethin' to override!
moves around energy calculation

modularity stuff
pulls out repeated code

still kinda grrrroooosssss
whooo! lots of changes to shell code
nobody cares about json
adds terminate_early option to The
adds facilities to concatenate logs
fixes median for NumberLog
removes unnecessary sort() from Numberlog.iqr()
adds comparison function for NumberLogs
fixes problems when NumberLog.lo == NumberLog.hi

ugh
breaks out repeated functionality in maxwalksat
adds early termination to maxwalksat
fixes new energy calculation in sa
adds early termination to sa