list::util has a shuffle method, so the code can be simpler
Added CharacterDraw, which draws twelve cards for character creation.
Added mysterious past and tens

Tens could not previously be drawn, so I added those. CharacterDraw now
checks to see if the last card drawn was a joker, to alert the user to
draw for a mysterious past.
Off by one bugfix

Whoops. Should draw twelve, not eleven, for character creation.
Merge pull request #1 from ruffin/master

Adding ruffin's Character Draw - thanks!