Scrapely

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- TemplatePageExtractor can now use multiple top-level extractors;
- internal cleanups;

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- HtmlPageParsedRegion can be copied/deepcopied.

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- Several bug fixes and improvements to the IBL extraction logic;
- allow training the Scraper class with an HtmlPage;
- Python 2.5 support is dropped;
- Unicode improvements for scrapely.tool.

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First release of Scrapely.