Fixed variance of MixtureModel
Passed on normalized probabilities to AliasTable
added support in variance for multivariate distributions
make MixtureModel a parametrized subtype of Distribution
Rename TriangularDist to SymTriangularDist
Rename triangular.jl to symtriangular.jl
Merge pull request #213 from micklat/mixture_params

make MixtureModel a parametrized subtype of Distribution
Add support for vom Mises distribution

The initial implementation supports standard moments, pdf, cdf, and drawing
samples.

To support large concentrations, the scaled bessel function implementation
had to be used. This scaled version is currently not supported in Base,
such that its support is currently added only for the von Mises distribution.
Add von Mises distribution to documentation

Added description of constructors to univariate distribution
documentation. Also, renamed support to helper functions in vonmises.jl
Addressing issue JuliaStats/Distributions.jl#223

The support of the distribution was not defined, as AngularDistribution or
CircularDistribution class does not exist, yet.
fixed bounds checking in Weibull's pdf() and logpdf()
move runtests.jl into test subfolder

otherwise Pkg.test() cannot find it (0.3 master)
test more parameters for Weibull
Merge pull request #226 from alyst/fix_tests

Fix running tests & small fixes to Weibull distribution
Merge remote-tracking branch 'upstream/master' into addvonmises
fix sqrt constants now √ an operator
make insupport vectorised instead of reducing
rename gradloglik -> gradlogpdf, fix matrix errors
Merge pull request #221 from davidanthoff/renamesymtriangulardist

Rename TriangularDist to SymTriangularDist
Fix spelling of isbounded() export