2.2.0

Added constants for more HTTP methods.
Added fix for thead element without nested tr element.
Improved global inference in XmlProvider.
Write API for CsvProvider.
Remove Freebase provider.
Improve support for loading big CSV files in CsvProvider.
Fix possible stack overflow in HTML parser.
Exclude elements with aria-hidden attribute when parsing tables in HtmlProvider.
Use ISO-8601 format when outputing dates.
Fix parsing of HTML closing tags with numbers.
Fixed handling of URI's with fragment but no query.
Fixed arrays created with XML provider having unneeded parent tags on some situations.
Allow to parse rows in CsvProvider without having to create a CsvFile.