Strings 1.0.0 released

First version of yiisoft/strings standalone package was released.

The package provides:

• StringHelper that has static methods to work with strings;
• NumericHelper that has static methods to work with numeric strings;
• Inflector provides methods such as toPlural() or toSlug() that derive a new string based on the string given;
• WildcardPattern is a shell wildcard pattern to match strings against.

More details could be found in the package README.