Version 0.0.3: Mac OS support, Quality of Life and Balance — Forgotten Mines Steam update #1227843

Hello folks! After some good ideas from the players to improve the quality of life for Forgotten Mines, here is the version 0.0.3. So, what's new on 0.0.3? - UI/UX change #01: now the unit don't deselect after an action. It'll keep selected and deselect only the action, turning back to the movement option; - UI/UX change #02: A warning will appear one turn before the limit, telling the player the need to go to the next room soon as possible. The "End Turn" button will turn red, telling visually to the player the risk of pressing it; - UI/UX change #03: When an item is dragged by the player, a message will appear on the screen, telling the player that there is a cost to equip an item, but not for drink a potion; - Heal now gives to the healer 0.5 Experience Points; - Arrow Attacks are buffed, a little;