- each machine has a set of likes/dislikes defined in data/dating.json
- likes/dislikes include activities, gifts and so on, and range from a -5 to a +5 value.
- That value is added to that machine's "dating points", whenever the associated action is performed
- each machine has a set of thresholds to unlock available actions with them, after a certain amount of dating points have been acquired.
- The more an action is performed, the less points will be rewarded for that action. The rate follows an exponential decay with a time constant tau equal to 3.

- Added a new UI message feature
- This shows animated messages on the UI screen
- Animated messages may be when you spend/gain money or when you gain stats.
- Animation is just a move up and fade away animation.
- Showing a message is as simple as showing the screen 'ui_message' with the following arguments:
- position : the absolute position of the message on screen
- displayable : a displayable to show as the message. Every renpy displayable is supported as well as CDDs