std: generic diff and levenshtein algorithms #166
Merged
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distance algorihtms to be used in
testament
andspellSuggest
.Existing implementation of the diff algorithm is not generic and can be hardly made into one, due to heavily hardcoded types and unclear API, so I added new one - it might not be as optimized, but it would be much easier to reuse for writing custom diff formatters (e.g. colored)