Thread-Safe Console

New Features

• [io]:
  • Added class Console for thread-safe and convenient console output with different logging levels
  • encoding: Added convenience methods for std::string with encodeToString() and decodeFromString()

Bug Fixes

• [core/io/parallel]:
  • Instances of core::PlatformHelper are not static anymore in core::Time, parallel::BackgroundWorker and io::serialization (fixes issue of wrong destruction order for static objects). This seems to have no negative influence on the performance of core::Time::currentTime() (measured on Linux).
• [io]:
  • fixed bug in LogFileBase (tried to create an empty target directory)