Fix for label formatting

- Fix: label now can contain arbitrary fields, we pass locals() to format() directly.
Tweaks
Reloader for Memory curves for Hierarchical code

- Added: Reloader for Hierarchical population code for memory. Does not support Fisher Information but whatever. Weird results though, need to be checked.
Launchers, Generators, Reloader for Error distributions

- Added: Plot of error distributions for paper.
- Added: Launchers to collect responses to later do histograms of errors and bias to nontargets.
- Added: Generators and Reloaders for PBS/SLURM runs.
Rayleigh and V-Test for circular uniformity

- Added: Rayleigh test and V-Test for Circular uniformity. Converted from circstats, mostly.