R-Hadron Mass Updates
@ekuwertz has set up a new R-Hadron mass calculation, fixing a few spin issues in the previous round. The calculation has also been extended to include sbottom and stop R-Hadrons. This is the version that we'll want eventually, so once it's in here we'll want to push it into the generation release to keep things consistent.
Starting as a WIP so that everybody can check what's changed here against expectations.