2.4.0

What's Changed

• Cmake improvements by @andreagilardoni in #504
• Adding missing virtual destructor to Property by @andreagilardoni in #529
• examples: fix username/password secure element logic by @pennam in #530
• Implemented non blocking ota download for unor4 by @andreagilardoni in #468
• examples: remova LoRa from schedule example by @pennam in #531
• TCP: do not disconnect if ota client is connected by @pennam in #532
• Remove deprecated Arduino trust anchor by @pennam in #523

Full Changelog: 2.3.1...2.4.0