Removes multithreading and time estimation from sampleMass
Incorporates sampleMass MCMC algorithm and fixes from Nathan Stein
Removes global accept/reject variables from sampleMass
Fixes a sampleMass bug
Fixes cmake build on OS X

Boost installs to a default include directory on Linux, but not on OS X. There was an ordering problem causing the yaml-cpp include dirs variable to be empty in base9, so OS X couldn't find Boost
Makes msRgbEvol generically return one value given one filter
Switches msRgbEvol back to returning a full mag set based on input filters

The single-filter method, while useful, required a binarySearch for every iteration. It's pre-optimization, but it's worth it.
Moves some uses of cmpnt out of setMags
Moves wdEvol and setMags into Star
Adds deriveCombinedMags to Star
Removes Star parameter from deriveCombinedMags and wdEvol
Makes setMags return an array rather than modifying a reference
Removes unnecessary passing of clusterAv and flux
Converts deriveCombinedMags to use a separate array internally rather than the 3rd index of mag
Converts unchecked array accesses to bounds checked .at() in Star, marg, and evolve
Makes deriveCombinedMags return mags and removes uses of cmpnt in marg
Removes passing of mags and globalMags to calcPost
Removes Star.photometry[] and makes logPost take a mag array
Switches from unsafe to checked array access in densities.cpp
Removes ltau reference parameter