Support optional stopword list about dinglehopper HOT 3 OPEN

Given

GT: the quick brown fox jumps over the lazy dog
OCR: the quick brown fox jumps over they lazer dog

with a stop word list:

the

would only count 1 error (lazy vs lazer).

from dinglehopper.

Just leaving this here for documentation - this is also sometimes referred to as "significant words" evaluation.

The number of occurrences of content words for which users might be interested in searching, excluding stop-listed words, such as "the", "he", "it", etc.
Measuring Mass Text Digitization Quality and Usefulness
Measuring the OCR Accuracy across The British Library’s Newspaper Archive

from dinglehopper.

would only count 1 error (lazy vs lazer).

Exactly. Any words appearing in the GT and also in the stopword list are ignored when computing the "significant words" accuracy rate.

from dinglehopper.