0.3.0

• Refactored the API: removal of namespaces (major breaking changes)
• Improved the organization of documentation
• Extracted values parsers to be usable independently from the selection API
• Refined the dates types
• Converted enums to const enums
• Added support for UTF-16 encoded files (big & little endian)
• Fixed the prototype of error subclasses
• The index now uses integers instead of references to make it JSON-serializable
• Conversions from Julian dates are now supported
• Transformed transparent classes into types, added mixins to factor some code
• Added migration and changelog pages