1.19.1: kiss: bump version

1.19.1 - 2020-05-07

Added

• Added e|extension to kiss which can be used to output kiss-extensions.

Changed

• kiss no longer outputs the extensions when called with kiss help. The
  output was too large for an average terminal, and a user had to scroll up
  for actual package manager options. These can now be retrieved with kiss e.
• When called from a subshell, kiss disables colour escape sequences. This
  behaviour can be overridden by setting KISS_COLOUR environment variable.
  If set to 1, it will be enabled globally, if set to 0 it will be disabled
  globally.