Searches the first unused groupid and uses that number for the current
payment attempt.
We previously used the highest value of used groupid + 1, which breaks
in a few corner cases.
Changelog-None
Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
Any file in this directory which is executable and whose name only
consists of alphanumeric characters, space, '.', '-' or '_' will be
automatically loaded when lightningd starts (unless suppressed with
commandline options).
a2a186ff29