Fix a bug that causes skills to be learned at the wrong level.

closes #95

Fix clipping when the `highlight` animation of a `CombatPortrait` sta…

Now, the only animation that modifies the modulate property is `disable`.

Add missing .import files for the turn order interface (close #138)

* Game over screen added

When the whole party is defeated, a game over screen is displayed. The player can either restart the encounter, or exit the game from it.

Closes #29

* Fixed mistakes and removed Game Over scene from CombatArena

* Removed grab focus from selection arrow

Manabars won't hide when depleted by default

Also, when a bar is set to hide when depleted, it will not show up again once another encounter starts.

* [WIP] Add new interface elements to represent the combat turn order...

This commit add two new scenes: TurnOrder and CombatPortrait.

The TurnOrder scene is designed to be a child of the CombatInterface node in
the CombatArena scene. It is initialized at the same time as the other
interface nodes, and dynamically display a CombatPortrait node for each
battlers, both PC and NPC.

For the moment, the CombatPortrait are just placeholders, and do not display
the real battlers portraits.

* [WIP] Rebuild the TurnOrder interface every time the TurnQueue is updated

* [WIP] Better CombatPortrait animation between combat turns

* [WIP] The TurnOrder node manages its own connections with signals...

... also add missing docstrings, and a CombatPortrait placeholder

* Fix previous commit, add missing Godette combat portrait

* Do not rebuild the TurnOrder interface if no battler enters of leaves the arena

... also add better combat portrait for Godette, Robi and Porcupine (256x256px)

* Animate the CombatPortrait faster

* Finally add the combat portrait of each battler

* Use battler.is_able_to_play() in CombatArena instead of directly checking the stats attribute...

... and minor comment changes in the turn order interface.

* Slightly reduce the space between CombatPortrait in the TurnOrder interface

Keep battlers in the TurnQueue, close #121

Create extensible AI for battlers

Fix #128, play the death animation correctly when a battler dies

InteractivePawn triggers actions with player input

Fix Touch Screen related issues

Compatibility with godot version > alpha2 

Small tweaks on Grid and LocalMap

instantiate class pathfinder directly with the class_name instead that preload gd file

By getting near the pawn, a small balloon will show, allowing the player to press `ui_accept` to start the interaction. They can be started automatically by setting `auto_start_interaction` to `true`. Works with both Area2D triggers and the raycasts.

For the touch, it was already working as far as I could tell.

Closes #115

instead

Transitions set to QUART, eases only in or out
Added fade anim
Made anim longer

Open and close animations added to CircularMenu

Visual destination point added to pawn leader when touch mode is active

I opted to add it to the leader, as a sprite. 
Closes #114

Closes #73