Method ambiguity between two Parameter constructors #38

Aqua test_ambiguities finds one ambiguity in src/parameters/parameter.jl: Parameter(name::AbstractString, minimum, maximum, samples) at line 30 against Parameter(name, minimum::DT, maximum::DT, n::Int64) where DT at line 36. A call Parameter("mu", 0.0, 1.0, 3) is ambiguous. Aqua suggests defining Parameter(::AbstractString, ::DT, ::DT, ::Int64) where DT. The new test/quality/aqua.jl marks the check broken until this is fixed.