1.6

Added

• Aspell — aspell backend.
• Ispell — ispell backend.
• IconvSource — converts text encoding using iconv.
• MetaSource — base class for meta sources.
• EncodingAwareSource — text source with specified encoding.
• ExternalSpeller — base class for external program adapters.
• Own exceptions.

Changed

• Hunspell class derived from new Ispell class.
• All sources now implement EncodingAwareSource.
• HtmlSource and XliffSource derived from MetaSource.