Added parser support for closure operator fun@(args)
Use equal() function for all script comparisons, better support for deciding when to use strings and when to use pointers equality.

 - removed I_RET instruction, return is now implicit at end of script
 - I_POP is not a binary instruction.

Fixed "legendname" error involving AE character.

These asserts were there because this shouldn't happen, I added them back for debug builds. We really should find the cause of any violations.

TODO: check if this also works on other platforms

Easier colored_mana scripting in keyword system for Magic and Vanguard.

Softer colors in graphs, the border of bars etc. is now lerp(black,fill,0.5) instead of just pure black.
Also tweaked the magic card_color graph colors a bit