* Flesh out the formerly incomplete ItemSlug class
* Convert all uses of text item slugs to use ItemSlug
* Move the ItemSlug class under models where it properly belongs
* Avoid the use of `slug` as a local variable or item attribute
wherever possible to avoid confusion between various kinds of slugs
* Merge the InventoryParser class into the Inventory class as it is
unlikely to need to support multiple versions
* Simplify the ModPack/Mod/ModVersion interfaces by replacing the use
of various "helper" methods with equivalent use of more generic
methods
* Update the various methods of ModPack/Mod/ModVersion to be able to
work with qualified or unqualified ItemSlugs
* Remove the unused BaseCollection class
* Add tests for ItemSlug and update all other tests to reflect
all the other changes
* Change default item URL to fall under /mod/<mod slug>/<item slug>
but kept the old URL pattern around with the old behavior (i.e.,
find the first item with that slug)
* Update Item to have a `qualifiedSlug` property which combines the
item's own slug with its Mod's slug. Updated a lot of code all
over to use this in preference to the plain slug.
* Add a `localizeTo` method to Inventory to allow non-qualified slugs
to be converted into qualified slugs within the inventory's stacks
* Update ModPack to work with either qualified or unqualified slugs
for relevant methods
* Fix model state changes to happen before related events are
triggered
* Add a debounce to the CraftingPlan object when triggering a recraft
due to changes in related objects (esp. its inventories)
* Update the Inventory's sort to keep items sorted by mod before name
with the Minecraft items sorted to the top
* Fix `ModPack.findItemByName` to actually recursively use the Mod's
method instead of slugifying the given name and looking for the
slug (since this won't necessarily work anymore).
* Ensure each Mod is assigned a reference to its containing ModPack
* Fix NameFinder to only consider an item non-gatherable if it is
also craftable
* Update ModVersionParserV1 to assign qualified slugs to recipes
for any items which are in the same mod (leaving any other slugs
unqualified)
* Add Underscore mixins for composing and decomposing slugs
* Update old tests for the use of qualified slugs, and some new tests
for the new methods added
Andrew Miner