Willow

Willow is a powerful, yet lightweight logging library written in Swift.

Features:

•  Default Log Levels
•  Custom Log Levels
•  Simple Logging Functions using Closures
•  Configurable Synchronous or Asynchronous Execution
•  Thread-Safe Logging Output (No Log Mangling)
•  Custom Writers through Dependency Injection
•  Custom Modifiers through Dependency Injection per Writer
•  Supports Multiple Simultaneous Writers
•  Shared Loggers Between Frameworks
•  Shared Locks or Queues Between Multiple Loggers
•  Comprehensive Unit Test Coverage
•  Complete Documentation