Feature: Heuristic exclude suggestions

I've also been thinking about having the system do heuristics, if there are proportionally many items for a given file, it's probably worth suggesting to exclude the file.

Roughly implementation compares the number of unique dictionary words in a file with the number of unique non dictionary words in the file. If there are more non dictionary words, the file will be skipped.

To get a file to be checked, one will need to:

• add words to the dictionary (allow.txt)
• mask patterns (patterns.txt)
• reduce the number of non dictionary words (by fixing typos)