Added "Growth rate" to hidden Options, 0% growth setting is now possible

I added "Growth Rate" to the hidden Options, making it possible to set 0% growth. When set to 0%, all units will have a growth rate of 0, and their stats will not change when leveling up. (Even if you have a scroll, all corrections will be canceled.)

This setting also supports displaying the growth rate on the stats screen.

I received a request saying, "I played this hack 10 times, and I want more challenge, please give me 0% growth version", so I implemented it. 0% growth seems to be a standard challenge theme and is often seen in other hacks as well.

I don't know if it can be beaten because I haven't played through with this setting. I think it's probably impossible. If you have completed it, please let me know.

You can access the hidden Options by holding down R and selecting Options.

Postscript

Added “3/4” and “1/2” to the “Growth Rate” in the hidden options. Multiply the final growth rate including the correction of scrolls by 3/4 and 1/2, respectively (rounding down fractions). Due to the added option values, if you take over the saved data playing at 0%, the setting value will change. Please understand.