mkarchiso: add a -r option to delete the working directory

`-r` will instruct to delete the working directory at the end of a
`mkarchiso` run.

If the specified directory already exists, then it will not be deleted
and instead produce a warning.

Implements #211

1 files changed, 1 insertions, 0 deletions

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 53b8c47..6906305 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -11,6 +11,7 @@ Added
 - Added classes for Memtest86+ and UEFI Shell menuentries.
 - Add foot-terminfo and wezterm-terminfo packages to releng to support terminal emulators using them. E.g. when
   installing via SSH.
+- Add a new ``-r`` option to ``mkarchiso`` that deletes the working directly after the build.
 
 Changed
 -------