- Methods to validate strings with character classes 
- Method to check if the string may be parsed to an integer or float 
- Return the indices of all ocurrences of a character 
- Core regular expression match methods 
- Provides methods to match with multiple patterns 
expressed as arrays of tuples or simple strs (for pattern_match_many_ci and pattern_match_many_cs) 
- Core regular expression replacement methods  
- Provides methods to replace with multiple patterns 
expressed as arrays of tuples 
- Regex-free matcher methods for common use cases 
- Set of methods to strip unwanted characters by type or extract vectors of numeric strings, integers or floats 
- Methods to split a longer strong on a separator and return a vector of strings,
a tuple of two strings or single optional string segment
Note some methods may return empty segments in the case of leading, trailing or repeated separators
See notes below 
- Converts arrays or vectors of strs to a vector of owned strings