1.19.0: changelog: update

1.19.0 - 2020-05-06

Added

• Added kiss-reporevdepends for finding all the packages on the repository
  that depends on the specified package.

Changed

• Removed the -p flag from tar while installing packages. busybox ignores it
  and we don't need it.
• Replaced tar flags with keys for historical compatibility.
• kiss now decompresses a tarball once and uses the decompressed tarball for
  listing and extraction.

Fixed

• Fixed the output of doc-strings in contrib scripts.
• kiss now ignores the binary programs in the repository for
  kiss extensions.