update --clean: do not unlink added files (
issue575)
templater: lowercase error message
Changing this messages should be safe: automated scripts ought to have
debugged their templates and wont grep for this error message.
patchbomb: with --in-reply-to, still thread message under first in series
When specifying --in-reply-to for a message M, have
[M]
[0/2]
[1/2]
[2/2]
instead of
[M]
[0/2]
[1/2]
[2/2]
which is more consistent with the way messages are being threaded
when --in-reply-to is not used.