removed dependency on Nette\Object, Nette\Utils\Arrays and Nette\Utils\Strings
added testing support files
added composer.json
added readme.md
NeonDecoder: implemented support for unicode surrogate pairs
NeonDecoder: fixed decoding of null keyword in object keys
NeonDecoder: space after colon is not required, unquoted string can not start with a colon (BC break)
WIP: improved tests