v0.16.4: fix bug in rand for MvTDist on 0.7+

Somehow a sqrt(::Vector) in _rand!(::GenericMvTDist, ::Matrix) escaped detection. It's now properly broadcasted (and tested).

v0.16.3

complete docstrings (#763)

* complete docstrings

* Fix indentation, add titles

* Fix misplaced use of backticks in docstring

v0.16.2: Merge pull request #741 from Keno/kf/deps

Fix a few deprecations

v0.16.1

Enable testing of the master branch (#736)

0.7 update

Merge pull request #729 from JuliaStats/sb/0.7

More 0.7 updates

v0.15.0: add Wigner semicircle distribution (#665)

* add Wigner semicircle distribution

* return type

* some fix

* add Semicircle to the list of univariates

* more docs

v0.14.2: Documenter (#640)

* Renamed doc/ to docs/.

* Updated gitignore with new docs directory (and docs/site).

* Added documenter builds to travis.

* Updated link in README and added latest badge.

* Started restructuring docs directory.

* Renamed all the .rst files to .md.

* Added JuliaStats logo.

* First pass converting the restructured text to markdown.

* Migrated function docs to docstrings for the appropriate types. NOTE: This often required making some default methods which fail if dispatched to.
* Added some missing references when possible.
* Added a few (mostly empty) docstrings on a few undocumented, but exported distributions.
* Fixed a few equation formatting issues (e.g., `FDist`).

* Minor fixes, but some of them are kind of hacks around the documentation system.

* Turned docstring methods into empty methods that won't be dispatched to.

This allows us to have custom docstrings that won't introduce new methods that could change the behaviour.
Reverted changes to testutils.jl

* Fixed bad references in some univariate docstrings.

* A few formatting fixes.

* Proper escaping of all the latex equations to support 0.7.

Looks like the Base.Markdown.MD `doc""" ... """` syntax doesn't play well with escaping latex equations.
The result is poorly formatted equations in documenter, but using normal docstrings works fine.

* Fix a few more missing escapes

* Convert `NoncentralChisq` to normal docstring so that Documenter can render the equations properly.

v0.14.1

Emergency fix to get distributions to work on 0.6 (#637)

v0.14.0: Allow AbstractVector in _rand! for ConjugatePriors.jl (#625)

* Allow AbstractVector in _rand! for ConjugatePriors.jl

* Remove ambiguity in _rand!

* Also sample a single variate in mvnormal.jl

v0.13.0

Added support for passing in a `AbstractRNG` to some of the univariat…