Detection algorithm

When \Jawira\CaseConverter\Convert class is instantiated, the input string is analysed to detect the words in it.

This is also the algorithm used by Convert::fromAuto method.

1. If input string contains _ (underscore character), then _ is used to split string.
2. If input string contains - (dash character), then - is used to split string.
3. If input string contains ␣ (space character), then ␣ is used to split string.
4. If input string contains . (space character), then . is used to split string.
5. If input string contains uppercase characters only, then the input string is considered to be a single word.
6. Finally, uppercase characters are used to split string.