csvtk v0.23.0

Changes

• csvtk v0.23.0
  • new comand: csvtk csv2rst for converting CSV to reStructuredText format. #137
  • csvtk pretty: add header separator line. #123
  • csvtk mutate2/summary: fix message and doc. Thanks @VladimirAlexiev #127
  • csvtk mutate2: fix null coalescence: ??. #129
  • csvtk genautocomplete: supports bash|zsh|fish|powershell. #126
  • csvtk cat: fix progress bar. #130
  • csvtk grep: new flag immediate-output.
  • csvtk csv2xlsx: fix bug for table with > 26 columns. 138