* [nano-signal-slot] Update to latest version
I know that official releases should be preferred, but I used the latest commit instead because it fix an issue which was causing compilations error on the latest MSVC version (https://github.com/NoAvailableAlias/nano-signal-slot/issues/26).
* [nano-signal-slot] Fix wrong date format
* [nano-signal-slot] Version update
The developer of this library has just added a new release version including the MSVC compilation bug fix.