Function rate_limit_complaining

plugins/autonestbox.cpp:309–315

rate limit to one message per season assumes this gets run at least once a season, which is true when enabled running manually with the "now" param also resets did_complain, so we won't miss the case where the player happens to run "autonestbox now" once a year in Spring

// won't miss the case where the player happens to run "autonestbox now"
// once a year in Spring
static void rate_limit_complaining() {
    static df::season old_season = df::season::None;
    df::season this_season = *cur_season;
    if (old_season != this_season)
        did_complain = false;
    old_season = this_season;
}

static size_t assign_nestboxes(color_ostream &out) {
    rate_limit_complaining();