Define the eid for Six-Cities Alliance
H.EXPANSIONS: Support Six-Cities Alliance
Add option: include_six
Add menus for Six-Cities Alliance
Add a card list of Six-Cities Alliance
Define a known card of Six-Cities Alliance

Source: http://hatokura.flipflops.jp/wordpress/archives/875
Apply errata on and after Six-Cities Alliance

Source: http://hatokura.flipflops.jp/wordpress/archives/888
Sort card definitions of Fairy Garden
Add folding markers in card definitions
Merge branch 'prepare-for-six-cities-alliance'