minor fix (#142)

Author: findmyway

src/extensions/ElasticArrays.jl

@@ -1,6 +1,7 @@
 using ElasticArrays
 
 Base.push!(a::ElasticArray, x) = append!(a, x)
+Base.push!(a::ElasticArray{T,1}, x) where T = append!(a, [x])
 Base.empty!(a::ElasticArray) = ElasticArrays.resize_lastdim!(a, 0)
 
 function Base.pop!(a::ElasticArray)

src/utils/reservoir_array_buffer.jl

@@ -26,7 +26,7 @@ Base.IndexStyle
 function Base.push!(b::ReservoirArrayBuffer{T,N}, x) where {T,N}
     b.n += 1
     if b.n <= b.capacity
-        append!(b.buffer, x)
+        push!(b.buffer, x)
     else
         i = rand(b.rng, 1:b.n)
         if i <= b.capacity