Tweaks to Ryan P's csvstat columns handling mods.
Tweaks to Ryan P's csvstat columns handling mods.

gepuro/csvkit,snuggles08/csvkit,moradology/csvkit,wjr1985/csvkit,bmispelon/csvkit,haginara/csvkit,jpalvarezf/csvkit,onyxfish/csvkit,themiurgo/csvkit,tlevine/csvkit,archaeogeek/csvkit,barentsen/csvkit,doganmeh/csvkit,arowla/csvkit,reubano/csvkit,bradparks/csvkit__query_join_filter_CSV_cli,elcritch/csvkit,Jobava/csvkit,matterker/csvkit,Tabea-K/csvkit,wireservice/csvkit,metasoarous/csvkit,aequitas/csvkit,cypreess/csvkit,dannguyen/csvkit,nriyer/csvkit,KarrieK/csvkit,kyeoh/csvkit,unpingco/csvkit