- version update to 1.8.9
* feature: new "--si" option to display and interpret size
suffixes in multiples of 1000 rather than 1024
* fix: continue producing progress output when the output is
blocking writes
* fix: honour the TMPDIR / TMP environment variables again,
rather than hard-coding "/tmp", when using a terminal lock file
* i18n: corrections and missing strings added to French
translations