Commands:
/mm bal - Check your balance
/mm pay <player> <amount> - Pay another player
/mm sell - Sell iron, gold, diamonds in hand
/mm tax <player> <percent> - OP-only
/mm interest set <percent> - OP-only
/mm interest update - OP-only
/mm gov bal/pay/sell - OP-only government account
/mm set <player> <amount> - OP-only set balance

NOTE: All decimals beyond hundredths place are truncated to avoid infinite money glitches.