message: Added changed language level to release notes and removed dedicated version from release notes headline
diff: -## SPECTRECOIN V2 (v2.1.0)
  +## SPECTRECOIN V2
  ```By downloading and using this software, you agree that 1/6 of the staking rewards are contributed to a development fund. The development fund aims to support the long term development and value of Spectrecoin. The fund is managed by the Spectrecoin core team.```
  @@ -43,6 +43,7 @@ We have implemented a check for DCBs and we have implemented a replay protection
  - Automatic Build improvements:
  - All wallets show now their build commit hash in the about dialog and on the main window title. ([#117](https://github.com/spectrecoin/spectre/issues/117))
  - Build from develop branch also have the build number and the commit hash in their archive name.
  +- Changed language level to C++17
  ## 2.1.0
  - Tor is now integrated as a separate process. This provides the same level of privacy but enables Spectrecoin to always use the latest version of TOR and to use the TOR plugins / bridges more effectively. **Note:** Linux users must install **tor** and obfs4proxy (if required) separately using their package manager.
  