[FIX] correct test julia v0.5

Author: Henri-Gerard

test/changeprob.jl

@@ -55,7 +55,7 @@ end
         betamin = rand()/2+0.5
         n = 100
         prob = 1/n*ones(n)
-        @test risk_proba(prob, AVaR(betamin), 1:n)'*(n:-1:1) - risk_proba(prob, AVaR(betamax), 1:n)'*(n:-1:1) >= 0
+        @test (risk_proba(prob, AVaR(betamin), 1:n)'*(n:-1:1) - risk_proba(prob, AVaR(betamax), 1:n)'*(n:-1:1))[1] >= 0. 
     end
 end