Archive, multitagging, cleanup

Cleaned up the current snippets for consistency and minor problems, added multiple tags to most of them, archived a few.

snippets/words.md

@@ -2,8 +2,8 @@
 
 Converts a given string into an array of words.
 
-Use `String.split()` with a supplied pattern (defaults to non-alpha as a regex) to convert to an array of strings. Use `Array.filter()` to remove any empty strings.
-Omit the second argument to use the default regex.
+Use `String.split()` with a supplied pattern (defaults to non-alpha as a regexp) to convert to an array of strings. Use `Array.filter()` to remove any empty strings.
+Omit the second argument to use the default regexp.
 
 ```js
 const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);