This adds some new rules for promoting and relegating reserve
teams:
+ Reserve teams will not be promoted into a league that contains its
first team or a higher-level reserve team.
+ If a first team or higher-level reserve team is relegated to a league
with a lower reserve team, then that reserve team will also be relegated.
In order to enable these rules, you must add the
<reserve_promotion_rules>default</reserve_promotion_rules> tag to your
contry xml file, and also define reserve teams in your league/team_defs
file using the <first_team> and <reserve_level> tags.
The first_team tag can be used to indicate that a team is a 'reserve
team'. The value for this new tag is the name of the first team
for this reserve team. The reserve_level is used to indicate if this
is the 2nd, 3rd, 4th, etc. team for the first team. For example:
<team>
<team_name>Blue</team_name>
</team>
<team>
<team_name>Blue 2</team_name>
<first_team>Blue</first_team>
<reserve_level>2</reserve_level>
</team>
<team>
<team_name>Blue 3</team_name>
<first_team>Blue</first_team>
<reserve_level>3</reserve_level>
</team>