Update README.md

Array universal key (coduo#143)

* Array universal key

* Remove unwanted Exception

* add test and remove dump

* revert invalid array key check

* remove not needed code samples

* Add more tests

* Update Readme with Universal Array Key example

CS Fixes & additional validation during tests (coduo#145)

* CS Fixes & additional validation during tests

* Added php 7.3

Updated README after 3.1 release

matcher fails when trying to use empty string as a pattern (coduo#119)

Prepare 2.4 release

Added repeat patter expander test

Allow to mark JSON properties & XML nodes as optional (coduo#102) (co…

…duo#107)

* Allow to mark JSON properties & XML nodes as optional (coduo#102)

* Add optional expander definition

* Add hasExpander method for Pattern

* Allow mark JSON properties & xml nodes as optional

* Use intuitive matcher type definition in Xml test stock qty node definition

* Add information about optional Expander to README

* Remove return type declaration

* Catch PHPMatcher Exception when parsing pattern for optional values

* Add getName to PatternExpander interface

* Remove unncessary ExpanderInitializer dependency in TypePattern

* Use constants for expander name instead of method

* Redeclare $expanderDefinitions using constants

* Add static is($name) method to PatternExpander interface

* revert php 7.0 feature

* drop php 5.3, 5.4 support

* Use proper test case base class

* Use proper test case base class

* Fixed has expander method

add support for all version of UUID [1-5] (coduo#91)

https://en.wikipedia.org/wiki/Universally_unique_identifier#Variants_and_versions

Added UUID matcher. (coduo#89)