Camshift with time

From the million .camshift files this produces 6 plots (one for each
shift) giving the shift with time for each residue
Block Averaging and Error

Calculates the block average from a given column of a tsv file and
outputs the average and the error.
Replica Trajectory Glue

Code used to glue broken replica trajectories back together.  Tested on
Replica_temp.xvg but should also be valid for replica_index.xvg.