DOC: release notes / v0.14.0 edits
CLN: remove int counting in generate_code since they cannot be nan
ENH: default on size when we have things that cannot be nan (e.g., ints)
CLN: add a column of ints to vb_suite/groupby.py for count
VB: add vbench for just ints
CLN: add names to count vbenches