Release 0.1.53

Release 0.1.53

* Add few remarks regarding chunk size limits
* Cipher API implementation in TZ backend
* Backend info API implementation
* Alias info refactoring
* Extend E2EE API support back to 6.0
* Refactor serialization code
* Cipher API unit tests
* Cipher API implementation (server part)
* Cipher API implementation (backend part)
* Cipher API implementation (client part)
* Drop all encryption requests upon disconnection
* Update cipher api description
* Improve AAD and GCM tag handling in cipher API
* Update ckmc_generate_new_params with new algorithms
* Allow generating unexportable binary data in TZ
* Add missing KBKDF params in TZ backend
* Workaround for GCM IV length issue
* Fix GCM IV length setting
* Test proper GCM IV length handling
* Rename DataType::isSKey
* Fix backend selection logic
* Fix default value for KBKDF LLEN parameter
* Backend info API
* Multi-stage encryption API
* Fix ckmc_key_derive API description

Change-Id: If9bfbaa1fe5169412441660df3bb1a055d22ce2a