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

fixed regex escaping bug, keywords with params are now no longer recognized if followed by an opening parenthesis

A mana cost of "31/2" is now broken up as "3","1/2".

For now, everything is considered blessed, because we are not yet using installers everywhere.

Whitespace skipping in Reader should not eat the newlines, previously it was impossible to load a string containing "\n\n"