Future improvements

[dakinggg]

• Unify the set of languages between cld2 and fasttext (see unify_lang branch for a start)
• Audit the list of name pairs (noticed (maria, mary), (kathleen, katherine))
• Generally improve language detection on titles (would require a whole model)
• if a person has two very disjoint "personas", they will end up as two clusters. Probably not resolvable, but putting here anyway
• somehow do better with low information papers (e.g. no abstract, venue, affiliation, references)