Removed the Rat object from bhv because it was useless.  Instead I changed it into a named tuple and a function that takes the behavior data and parses into a nice DataFrame.  Also changed timelock module to use the new function.
Fixed a bug in cross_scatter that was changing the argument array p1 in place
Merge branch 'bhv-module-rewrite-because-it's-stupid'
Fixed a bug I introduced in the last commit...