Abstractions and miscellaneous

[KosmikCamel]

• Creates SKG abstraction

• Creates LTR abstraction

• Ch3.2: var name change 'sparse_' to ''

• Ch5: scopes 'lang_model' and 'coref_model'

• Ch5: Applies SKG abstraction

• Ch6: Applies SKG abstraction

• Ch6: Adds order bys for result consistency

• Ch6: Better abstracts Spell Checking

• Ch7: Adds correctly named fields and defaults for TextTagging

• Ch7: Applies SKG abstraction

• Ch7: Removes process_semantic_query

• Ch7: Splits/adds several listings

• Ch7: Fixes decoding of query for semantic search

• Ch8: formatting

• Ch10: Applies LTR abstraction

• Ch12: Applies LTR abstraction

• Ch13: Removes print for output consistency

Loose ends:

• Ch7: Debug semantic functions "surface form" missing
• Ch7: Debug process_semantic_functions
• Ch11: Non-manuscript notebooks need abstraction applied

[treygrainger]

Pushing in current PR addressing the major items. Daniel has some follow-up PRs to address some of the smaller or trickier stuff.