1.7:
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 * Fix an addition used in httpbl class for 1.6

1.6:
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 * Added legal property bag information for gdpr/dsgvo

1.5:
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 * Set plugin consistencies
 * Use load language API - extends required Serendipity version to v.1.6
 * Use PHP5+ constructor in httpbl class

1.4:
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Removed old blacklist 'sbl-xbl.spamhaus.org, bl.spamcop.net' with 'list.blogspambl.com'
and removed use of missing $dnsbl->getTxt() function in delivered old DNSBL.php, thanks to indigoxela