Custom level and marker separators

Changed

• Custom level and marker separators
• Updated example

Fine-grained logging level

Added

• Support Markers
• Update dependencies
• Update javadocs and site
• Multi-level and multi-marker configuration

AWS request ID is configurable

Added

• Name of AWS request ID is configurable

Fixed

• CRLF injection issue #2

First public release

Added

• Implement a logger.
• Add Javadocs.
• Add the site.