v0.5.10

Fix transaction signing and stability issues

v0.5.9

Unification of source tree and switching to CMake build system;
Resolved openssl, boost and Qt compatibility issues;
Fixed synchronizing issues on poor network connections (disconnect node on CRC error);
Fix proof-of-stake validation issues during initial synchronization;
Windows AArch64 support;
Temporarity remove encryptmessage/decryptmessage functionality;
Remove berkeleydb block index wrapper;
Switch to IXWebSocket based RPC server.