Changes since v0.4:
- added max view pitch slider;
- added partial Russian translation (by Blueberry);
- added options menu icon;
- added self damage multiplier;
- added add monster health cap option;
- fixed broken ammo regeneration;
- fixed max health ignoring starting health;
- fixed degeneration resetting health to its cap on death;
- fixed the Permanent Minotaur option;
- fixed tomed weapons powerup option;
- fixed ammo regeneration in Final Doomer;
- fixed friction being lowered multiple times after resurrect;
- hopefully fixed unreliable variable resetting to default;
- several minor internal improvements.