fix deprecations (#65)

Author: KristofferC

REQUIRE

@@ -1 +1,2 @@
 julia 0.5
+Compat 0.17

src/Distances.jl

@@ -2,6 +2,8 @@ __precompile__()
 
 module Distances
 
+using Compat
+
 export
     # generic types/functions
     PreMetric,

src/generic.jl

@@ -5,21 +5,21 @@
 #   d(x, y) >= 0
 #   d(x, x) = 0
 #
-abstract PreMetric
+@compat abstract type PreMetric end
 
 # a semimetric is a function d that satisfies:
 #
 #   d(x, y) >= 0
 #   d(x, x) = 0
 #   d(x, y) = d(y, x)
 #
-abstract SemiMetric <: PreMetric
+@compat abstract type SemiMetric <: PreMetric end
 
 # a metric is a semimetric that satisfies triangle inequality:
 #
 #   d(x, y) + d(y, z) >= d(x, z)
 #
-abstract Metric <: SemiMetric
+@compat abstract type Metric <: SemiMetric end
 
 
 # Generic functions

src/metrics.jl

@@ -35,7 +35,8 @@ immutable RenyiDivergence{T <: Real} <: PreMetric
     is_zero::Bool
     is_one::Bool
     is_inf::Bool
-    function RenyiDivergence(q)
+
+    function (::Type{RenyiDivergence{T}}){T}(q)
         # There are four different cases:
         #   simpler to separate them out now, not over and over in eval_op()
         is_zero = q ≈ zero(T)
@@ -45,7 +46,7 @@ immutable RenyiDivergence{T <: Real} <: PreMetric
         # Only positive Rényi divergences are defined
         !is_zero && q < zero(T) && throw(ArgumentError("Order of Rényi divergence not legal, $(q) < 0."))
 
-        new(q - 1, !(is_zero || is_one || is_inf), is_zero, is_one, is_inf)
+        new{T}(q - 1, !(is_zero || is_one || is_inf), is_zero, is_one, is_inf)
     end
 end
 RenyiDivergence{T}(q::T) = RenyiDivergence{T}(q)
@@ -55,7 +56,7 @@ type JSDivergence <: SemiMetric end
 type SpanNormDist <: SemiMetric end
 
 
-typealias UnionMetrics Union{Euclidean, SqEuclidean, Chebyshev, Cityblock, Minkowski, Hamming, Jaccard, RogersTanimoto, CosineDist, CorrDist, ChiSqDist, KLDivergence, RenyiDivergence, JSDivergence, SpanNormDist}
+const UnionMetrics = Union{Euclidean, SqEuclidean, Chebyshev, Cityblock, Minkowski, Hamming, Jaccard, RogersTanimoto, CosineDist, CorrDist, ChiSqDist, KLDivergence, RenyiDivergence, JSDivergence, SpanNormDist}
 
 """
     Euclidean([thresh])

src/wmetrics.jl

@@ -6,7 +6,7 @@
 #   Metric types
 #
 ###########################################################
-typealias RealAbstractArray{T <: AbstractFloat} AbstractArray{T}
+@compat const RealAbstractArray{T <: AbstractFloat} =  AbstractArray{T}
 
 
 immutable WeightedEuclidean{W <: RealAbstractArray} <: Metric
@@ -31,7 +31,7 @@ immutable WeightedHamming{W <: RealAbstractArray} <: Metric
 end
 
 
-typealias UnionWeightedMetrics{W} Union{WeightedEuclidean{W}, WeightedSqEuclidean{W}, WeightedCityblock{W}, WeightedMinkowski{W}, WeightedHamming{W}}
+@compat const UnionWeightedMetrics{W} = Union{WeightedEuclidean{W}, WeightedSqEuclidean{W}, WeightedCityblock{W}, WeightedMinkowski{W}, WeightedHamming{W}}
 Base.eltype(x::UnionWeightedMetrics) = eltype(x.weights)
 ###########################################################
 #