Failing due to new version of CSV.jl 0.5.1

[xiaodaigh]

On Julia 1.1 with CSV.jl 0.5.1 I get an error running

using RDatasets
cars = dataset("datasets", "cars")

MethodError: no method matching CSV.File(::Base.GenericIOBuffer{Array{UInt8,1}}; delim=',', quotechar='"', missingstring="NA", rows_for_type_detect=200)
Closest candidates are:
  CSV.File(::Any; header, normalizenames, datarow, skipto, footerskip, limit, transpose, comment, use_mmap, missingstrings, missingstring, delim, ignorerepeated, quotechar, openquotechar, closequotechar, escapechar, dateformat, decimal, truestrings, falsestrings, type, types, typemap, categorical, pool, strict, silencewarnings, debug, parsingdebug, allowmissing) at C:\Users\RTX2080\.julia\packages\CSV\iKwnQ\src\CSV.jl:154 got unsupported keyword argument "rows_for_type_detect"
  CSV.File(::Any, !Matched::Any, !Matched::Any, !Matched::Any, !Matched::Any, !Matched::Any, !Matched::Any, !Matched::Any, !Matched::Any, !Matched::Any) at C:\Users\RTX2080\.julia\packages\CSV\iKwnQ\src\CSV.jl:24 got unsupported keyword arguments "delim", "quotechar", "missingstring", "rows_for_type_detect"
  CSV.File(!Matched::String, !Matched::Array{UInt8,1}, !Matched::Array{Symbol,1}, !Matched::Array{Type,1}, !Matched::UInt8, !Matched::Bool, !Matched::Array{Array{String,1},1}, !Matched::Int64, !Matched::Int64, !Matched::Array{UInt64,1}) at C:\Users\RTX2080\.julia\packages\CSV\iKwnQ\src\CSV.jl:24 got unsupported keyword arguments "delim", "quotechar", "missingstring", "rows_for_type_detect"

Stacktrace:
 [1] kwerr(::NamedTuple{(:delim, :quotechar, :missingstring, :rows_for_type_detect),Tuple{Char,Char,String,Int64}}, ::Type, ::Base.GenericIOBuffer{Array{UInt8,1}}) at .\error.jl:125
 [2] (::getfield(Core, Symbol("#kw#Type")))(::NamedTuple{(:delim, :quotechar, :missingstring, :rows_for_type_detect),Tuple{Char,Char,String,Int64}}, ::Type{CSV.File}, ::Base.GenericIOBuffer{Array{UInt8,1}}) at .\none:0
 [3] (::getfield(RDatasets, Symbol("##1#2")){String,String})(::IOStream) at C:\Users\RTX2080\.julia\packages\RDatasets\1Ih8s\src\dataset.jl:28
 [4] #open#310(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::getfield(RDatasets, Symbol("##1#2")){String,String}, ::String, ::Vararg{String,N} where N) at .\iostream.jl:369
 [5] open(::Function, ::String, ::String) at .\iostream.jl:367
 [6] dataset(::String, ::String) at C:\Users\RTX2080\.julia\packages\RDatasets\1Ih8s\src\dataset.jl:26
 [7] top-level scope at In[89]:2

[bjarthur]

what's strange is that the REQUIRE file says CSV 0.3, and yet 0.5.1 is installed when adding RDatasets. were it a Project.toml file instead, ^0.3 would not even install 0.4 i think.