decapitalize the filenames in test (for consistency) and add a run_tests.jl as an overall testing script
add logpdf & logpdf! for MultivariateNormal and Dirichlet for efficient batch evaluation
change filenames in .travis.yml
use logdet in logpdf of MultivariateNormal
destination storage as the first argument in logpdf! -- this results in more consistent interface
minor change: separate the part using trtrs to a dedicated function
Merge pull request #61 from lindahua/improved_logpdf

Improved logpdf