now we can:
- parse short options, those beginning with a hypnen '-'
- parse long options, those beginning with two hyphens '--'
- long options can have arguments in two forms:
- either with an equal sign, e.g.: --opion-name=argument
- or with a space, e.g: --option argument
in the latter case we can have more than one argument, e.g: --option argument1 argument2
- parse non-option arguments, those after two hyphens to the end of a string, e.g: -- arg1 arg2
- changed function names: PascalCase to snake_case
- templates functions moved to a seperate file (text_private.h)
- as a public api only available functions with char/wchar_t/std::string/std::wstring
- ToLower(...) changed to to_lower_emplace(...), similar ToUpper(...) to to_upper_emplace(...)
- added functions:
std::string to_lower(const std::string & str);
std::string to_upper(const std::string & str);
and with std::wstring too
- functions with postfix 'NoCase' changed to 'nc'