ep7 duckdb: Add Damerau-Levenshtein string comparison function

I genuinely love seeing 50+ year old academic papers being used in modern projects - and there is certainly no shortage of occurrences like these.

This episode of Commit History covers functionality in the DuckDB project - specifically the levenshtein and damerau_levenshtein string similarity functions. We dive into their past, their differences, and how they can be used.

Links referenced in this episode:

• https://duckdb.org/

• The String-to-String Correction Problem by Wagner and Fischer (pub 1974)

• A Technique for Computer Detection and Correction of Spelling Errors by Damerau (pub 1964)

• An Extension of the String-to-String Correction Problem by Wagner and Lowrance (pub 1975)

• Damerau-Levenshtein Distance wikipedia

• duckdb commit 4088655