Made condition and default_expand parameters of expand_keywords optional.

As a bonus the keywords and perhaps other reusable parts can now be used by vanguard with "include file: /magic.mse-game/keywords".

  used to: by running scripts on cards and comparing to string value of selected group
  now:     by keeping a list of group_ids for all cards, and comparing indices
Added 'bin size' attribute for making a histogram of numeric axes.
Added 'Text length' statistic.

Better legend name filter for Magic.
Version bumps for symbol-fonts.
Last of Eventide update (keywords and creature types).

seed settings and pack amounts are stored in settings