NumberButton can change representation
Agent: General thought bubble added
Lizard: Refactored according to Birdhero structure
Lizard: Intro updates
Agent asset load rewritten

The server scripts did not accept the previous way of doing it.
Lizard: Sound placeholders
Phaser updated
Birdhero: Bugfix for bird origin.
Birdhero: Bug workaround

Switching back and forth between two values did not work for the frames.
It simply switched back and forth between the two frames that had those
tints.
TweenMax updated
Shuffle array function
Birdhero: Shuffle bird tints
Lizard: Shuffle ant tints
Agent setup: Improved ui
tweenTint function added

Tweening a tint is problematic since it is a single number, making
simple tweens from one to another flicker between colors. This function
makes sure that the transition is smooth.
Lizard: Lizard tint tweened + random target tint
Lizard: Better tree crown looks
Bugfixes for double representation
Minor refactoring of birdhero and lizard
Super class for Number Panel Subgames added

The number panel subgames (birdhero, lizard and bee) all rely on the
same mechanics, so this is an attempt to reconcile shared code in a
super class.
Here Birdhero has been updated for the new super class.