1.18.0: update

1.18.0 - 2020-05-04

Added

• Added editorconfig file since we now have 4 languages (roff, Makefile, sh, C)
  in the repository.
• Added kiss-readlink as a readlink -f replacement.
• Added kiss-message for checking package messages.
• Added this CHANGELOG

Changed

• Made tar calls portable. kiss is no longer limited to busybox, bsdtar, or
  gnu tar!

Removed

• Dropped the usage of readlink in kiss.