Update v0.21 - Fireflies at night and more!

Hey there!

Here is an update of Haven Park! I've been working on it for a few days now, and I'm very happy with these changes!

• Added new activity building: Swing
• Added fireflies to catch at night
• Added new quest: catch fireflies
• Added new dialogues: The book at Black Tower, some characters who were only saying "Hi"
• Improved the dialogue system parser for clearer syntax and easier localization
• Balanced the skill points earnings when leveling-up
• Balanced experience required to level up (more exponential)
• Improved some UI elements on the notebook (fonts, spacing)
• Shortened the time before campers arrives when conditions are met
• Added butterflies
• Remapped default buttons
• Added key to open the map (tab/Y)
• Fixed building placement validation, now based on the building's position, not Flint's)
• Fixed wrong key name displayed on some hints depending on the controller
• Minor demo version changes
• And other smaller fixes

My next priority is to focus on preparing the demo version of the game!