* Add SHA512 support to CryptoHash
* Add ChaCha20 support
* Add HMAC support
* Add new HmacBlockStream, used in KDBX 4
* Add support for ChaCha20 protected stream
Fixed 2 memory leaks in production code and a few in testcases. As a
result leak_check_at_exit ASAN option does not need to turned off for
non-gui tests.
Smart pointers should be used elsewhere for consistency, but the sooner
this fixes are delivered, the lesser memory leaks are introduced.