Initial guess of type Vector{Any}

[Jonas-a-Zimmermann]

When giving and Initialguess Vector and an Searchspace,
if the initial guess is of type Vector{Any} the execution errors with:

MethodError: no method matching iterate(::ContinuousRectSearchSpace)
Closest candidates are:
iterate(::Union{LinRange, StepRangeLen}) at range.jl:872
iterate(::Union{LinRange, StepRangeLen}, ::Integer) at range.jl:872
iterate(::T) where T<:Union{Base.KeySet{<:Any, <:Dict}, Base.ValueIterator{<:Dict}} at dict.jl:712

What I would expect is something like:

Assertion Error: Initial guess must be of type Vector{Float}

or it to just run. (create a Vector of type Vector{Float})

Minimal Reproducing Example

using BlackBoxOptim

function f(x)
    #dummy function to fit
    return sum(x)
end

#e.g. Read data From file 
x0 = []
push!(x0, 1.2)

bboptimize(f, x0; SearchRange = [(0., 1.5)])

This could be fixed by e.g. calling BlackBoxOptim.Individual on the input x0, or an assertion to inform the user to make the call themselves.