Fideparser

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- Handle situations when the given arbiter
has not valid information in FIDE site [erral]

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- Avoid duplicated headers in exported csv file [erral]

- Fix arbiter parsing: previously some organizers were
parsed like arbiters. Fixes 1 [erral]

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- Added a CSV file merging utlity [erral]

- Improve documentation [erral]

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- Initial release [erral]