* Support for PHP 7
* Added Crypto stream BIO wrapper
* Improved error handling
* Added an integer overflow checking
* Removed Algorithm class and AlogirithmException class
* Introduced a MAC class as a subclass of Hash and parent of HMAC and CMAC
* Added MACException class subclassing HashException
* Fixed HMAC and CMAC implementation and added key param to constructor
* Fixed and tested CCM mode
* Added new error code for failed tag verification (TAG_VERIFY_FAILED)
* Add setTagLength Cipher method replacing length param in getTag
* Removed Rand::egd
* Created a complete API documentation