tedunderwood/noveltmmeta: NovelTM Metadata, Publication State

Metadata about 210,266 volumes identified as English-language fiction in HathiTrust Digital Library, 1700-2009. The metadata is divided into seven lists; several of the short lists have been manually corrected. This release of metadata for "NovelTM Datasets for English-Language Fiction" was timed for publication of the accompanying article. It represents missing data in the date field better than the first release did, and also removes duplicate rows in volumemeta.tsv and weighted_subset.tsv, guided by a suggestion from Matt Wilkens.