clean up Cauchy
Clean up Chisq and Chi
reimplement Cosine and test it
move edgeworth.jl from src/univariates/continuous to src/
Clean up Exponential
Clean up FDist and test
temporarily disable the tests with nightlies
Change to using randexp (#9144), add Compat.jl dependency.
rename itrunc -> trunc, etc
bump Compat version requirement
Merge pull request #321 from simonbyrne/compat

Change to using randexp (#9144), add Compat.jl dependency.
Try to get samplers working efficiently