v0.0.7
        Remove a bunch of wastes.

v0.0.6
        Handle "utf-8" charset correctly.

v0.0.5
	GenericExtractor can now extract directly from HTML file.

v0.0.4
        Introduce JSONLD-based extractor.

v0.0.3
        Introduce CSS-based site-specific extractors.

v0.0.2
	Improvements on error-handling.

v0.0.1
	Inital Release
