Added OrderBy when iterating over tags and keys

[mrange]

I think ordering on keys could help eliminate fake diffs because of random shuffling. Perhaps the original order is important to preserve but I coudn't think of a reason why

[devlead]

Thanks for your contribution, I'm going ahead and closing this PR.

I've added the following settings which should add similar behaviour

ARI/src/ARI/Commands/Settings/InventorySettings.cs

Lines 26 to 36 in 86b9886

	[CommandOption("--skip-frontmatter")]
	public bool SkipFrontmatter { get; set; }
	[CommandOption("--skip-frontmatter-summary")]
	public bool SkipFrontmatterSummary { get; set; }
	[CommandOption("--skip-frontmatter-modifed")]
	public bool SkipFrontmatterModified { get; set; }
	[CommandOption("--skip-frontmatter-order")]
	public bool SkipFrontmatterOrder { get; set; }

Also switched tags and properties to an ordered dictionary so they should always be rendered in the same order.