fix error, bump Distributions version

Author: simonbyrne

REQUIRE

@@ -1,3 +1,3 @@
 julia 0.3-
 StatsBase
-Distributions
+Distributions 0.4.6

src/univariate.jl

@@ -2,13 +2,13 @@
 immutable UnivariateKDE{R<:Range}
     x::R
     density::Vector{Float64}
-en
+end
 
 # construct kernel from bandwidth
 kernel_dist(::Type{Normal},w::Real) = Normal(0.0,w)
 kernel_dist(::Type{Uniform},w::Real) = (s = 1.7320508075688772*w; Uniform(-s,s))
 
-typealias LocationScale Union(Laplace,Logistic)
+typealias LocationScale Union(Laplace,Logistic,SymTriangularDist)
 kernel_dist{D}(::Type{D},w::Real) = (s = w/std(D(0.0,1.0)); D(0.0,s))