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Release 4.1.1

* Permit nul in IA5String

Release 4.1.0

* Implement REAL type

Release 4.0.0

* Change requirements to PHP 7.2
* Change namespace to PSR-2 compatible by adding vendor prefix
* Support a subset of BER with indefinite length and constructed strings

Release 3.4.3

* Fix leading fractional zeroes in GeneralizedTime

Release 3.4.2

* Fix decoding of constructed bit strings

Release 3.4.1

* Add support for constructed strings

Release 3.4.0

* Add support for indefinite length encoding

Release 3.3.1

* Fix object identifier encoding

Release 3.3.0

* add application and private tagging classes