Benchmark failures - bugs/missing operations

[phofl]

• GroupBy.value_counts
• iloc
• select_dtypes
• Repartition misses keyword-argument partition_size
• GroupBy.apply
• set_index
• grouping by a Series object
• grouping by an Index object
• assign with callable
• GroupBy.agg shuffle keyword
• missing align step in add/sub, ...
• missing keywords in read_csv
• "p2p" shuffle

Not planning on fixing all of them immediately, just collecting failures and fixing what was on my agenda anyway or is a very small fix.

Reference build: https://github.com/coiled/benchmarks/actions/runs/5310108176/jobs/9611644148?pr=837

[phofl]

@mrocklin thoughts on partition_size in repartition? This triggers an immediate computation in dask/dask, but I think we could reasonably defer this to compute time

[mrocklin]

I think that anything we can defer we should defer.

I think that for this value in particular we'll likely have to compute it if anything asks us for divisions.

[phofl]

closing, those all work