Added custom property drawer for Variable properties.
Updated If, Set Variable, etc. to use new property drawer.
Added new Set Save Profile, Save Variable, Load Variable & Delete Save
Key commands.
Changed layout of Variables window to support editable value
Public variables in other FungusScripts appear in the variable picker
popup menu.
Variables now have a public value property and remember their starting
value for when they are reset.
Disabled LoadGlobals / SaveGlobals commands.
Changed all variable classes to use simple public value variable.
Added FungusScript.GetPublicVariables()
Deleted GlobalVariables class.
Added Variables test scene