| 0.9 ..... 2009-11-05
	Initial release
1.0 ..... 2010-01-19
	Improved function removeDuplicateKw() to better handle deletion of duplicate
	plural words (English), such as "class" and "classes".
1.1 ..... 2010-01-19
	Changed the function array_one_dim() to array_flatten().
1.2 ..... 2010-08-14
	Improved regular expressions in function html2txt().
1.3 ..... 2010-08-20
	Added word segmentation for character ':' in function process_text().
1.4 ..... 2011-05-08
1.5 ..... 2012-02-26
1.6 ..... 2012-02-26
1.7 ..... 2012-11-02
	Added link to repo on GitHub.
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