Data type: card pack item reference

DOC_MSE_VERSION: since 0.3.7

--Overview--

A reference to a [[type:pack item]].



--Properties--
! Property	Type				Default		Description
| @name@	Name of a [[type:pack item]]	''required''	Name of the pack item to include in this pack.
| @amount@	[[type:scriptable]] [[type:double]]	1	How many of those cards are in the pack?
| @type@	@"replace"@, @"no replace"@ or @"cyclic"@	@"no replace"@	How should the cards be selected? The options are: <ul><li>Random with replacement</li><li>Random without replacement</li><li>Cyclic, selecting each card in turn</li></ul>

--Example--
>item:
>	name: common
>	amount: 11
>	type: no replace

Include 11 commons in this [[type:pack type|pack]].
The cards will be selected without replacement, so the pack is guaranteed not to contain duplicate cards (if the set is large enough).
