v0.3 public release

This public release features a brand new quest with a lot of content, together with a major improvement on the battle system.

Patreon announcement.

Detailed changelog

- New quest: the classroom. This quest features some more sexy content such as magic wand, sybian machine, and blindfold. This also contains a sneak mission that makes heavy use of the teleportation blink spell.
- New battle improvement: multiple sex skills per turn.
  + You can now use multiple sex skills on different enemies (if applicable) per turn.
  + You can also use up to 3 items per turn (multiple potions of different types also work).
  + Enemy penetration and force hand/blow jobs will have higher priority compared to other skills (e.g. whipping, or grabbing). This is so that the battle can be more focused on these skills and can end in fewer turns.
- Add a 3 seconds cooldown for potions (stamina and mana have separate cooldown timers).
- Add a strong cheat to finish the current quest. This is so that you can easily skip through certain quests and play the ones that you enjoy. You can use this cheat multiple times to skip through as many quests as you like.

- Fix quest 6 to allow using blink on top of the dirty spots.
- Fix quest 6 issue of loading in the middle of the quest causing all the dirty spots to disappear.
- Add background music to quest 6.
- Fix number of enemies being NaN if you get defeated.