v0.3.0

• Make library compatible with any SLF4J logger implementation (not just Logback)
  • The library is still optimized for Logback, but it's now an optional dependency
  • The dependency on logstash-logback-encoder has been dropped (we now use SLF4J's KeyValuePair instead of the SingleFieldAppendingMarker from logstash-logback-encoder)
• Replace Logger constructors with getLogger functions
  • Since there are so many classes named Logger in various libraries, calling getLogger {} instead of Logger {} makes it easier to auto-complete in your IDE
• Add getLoggingContext function to allow passing logging context between threads
• Improve performance of withLoggingContext by reducing array copies
• Improve test coverage
  • We now run integration tests for various SLF4J logger implementations, to make sure that the library works for implementations other than Logback