v0.2.0-beta

• Implemented named arguments.
• Added dependency on google guava for template cache.
• Split the default loader class into multiple discrete loaders.
• Added the title filter.
• Fixed issue where compilation mutex might not have been released.
• Fixed parsing issues if variable names were prefixed with operator names.
• Fixed issue where included templates didn't have access to context.
• Fixed issue where if tag could not be used directly on a boolean variable.
• Removed the format filter.
• Fixed misc other smaller bugs.