Blacks: Add metadata to structured representations for citations

[mjbommar]

Add metadata to structured representations for citations.

For example:

ABIDE | To “abide the order of the court” means to perform, execute, or conform to such order. Jackson v. State, 30 Kan. 88, 1 Pac. 317; Hodge v. Hodgdon, 8 Cush. (Mass.) 294. See McGarry v. State, 37 Kan. % 14 Pac. 402

Parse Examples:

• "Jackson v. State, 30 Kan. 88"
• "Hodge v. Hodgdon, 8 Cush. (Mass.) 294"
• "McGarry v. State, 37 Kan. % 14"