need to be able to pass pass makeunique=true

[alex-s-gardner]

This does not work because the name v is duplicated in output... need to be able to pass makeunique=true:

bs = BinStatistics.binstats(df, :v, 0.0:100.0:6000.0, :v);

ERROR: ArgumentError: Duplicate variable names: :c. Pass makeunique=true to make them unique using a suffix automatically.
Stacktrace:
  [1] make_unique!(names::Vector{Symbol}, src::Vector{Symbol}; makeunique::Bool)
    @ DataFrames ~/.julia/packages/DataFrames/58MUJ/src/other/utils.jl:99
  [2] make_unique!
    @ ~/.julia/packages/DataFrames/58MUJ/src/other/utils.jl:77 [inlined]
  [3] #make_unique#4
    @ ~/.julia/packages/DataFrames/58MUJ/src/other/utils.jl:121 [inlined]
  [4] make_unique
    @ ~/.julia/packages/DataFrames/58MUJ/src/other/utils.jl:120 [inlined]
  [5] #Index#7
    @ ~/.julia/packages/DataFrames/58MUJ/src/other/index.jl:27 [inlined]
  [6] Index
    @ ~/.julia/packages/DataFrames/58MUJ/src/other/index.jl:26 [inlined]
  [7] manipulate(df::DataFrame, args::Vector{Int64}; copycols::Bool, keeprows::Bool, renamecols::Bool)
    @ DataFrames ~/.julia/packages/DataFrames/58MUJ/src/abstractdataframe/selection.jl:1825
  [8] manipulate
    @ ~/.julia/packages/DataFrames/58MUJ/src/abstractdataframe/selection.jl:1823 [inlined]
  [9] select
    @ ~/.julia/packages/DataFrames/58MUJ/src/abstractdataframe/selection.jl:1298 [inlined]
 [10] binstats(df::DataFrame, axis_col::Symbol, axis_edges::StepRangeLen{…}, bin_col::Symbol; grp_function::Vector{…}, col_function::Vector{…}, missing_bins::Bool)
    @ BinStatistics ~/.julia/packages/BinStatistics/w35YT/src/functions.jl:103
 [11] binstats(df::DataFrame, axis_col::Symbol, axis_edges::StepRangeLen{…}, bin_col::Symbol)
    @ BinStatistics ~/.julia/packages/BinStatistics/w35YT/src/functions.jl:73
 [12] top-level scope
    @ ~/Documents/GitHub/Altim/src/sampling_test.jl:1
    ```