LinkChecker versions

v9.3 [Aug 10, 2014]
- Parse and check links in PDF files.
- Parse Refresh and Content-Location: HTTP headers for URLs.
- Plugins: PDF and Word checks are now parser plugins (PdfParser, WordParser). Both plugins are not enabled by default since they require third party modules.
- Print a warning for enabled plugins that could not import needed third party modules.
- Treat empty URLs as same as parent URL.

v8.4 [Jan 30, 2013]
- checking: Support URLs.
- logging: Sending SIGUSR1 signal prints the stack trace of all current
running threads. This makes debugging deadlocks easier.
- gui: Support Drag-and-Drop of local files. If the local file is
a LinkChecker project (.lcp) file it is loaded, else the check
URL is set to the local file URL.

v7.2 [Oct 27, 2011]
Fixes:
- checking: HTML parser now correctly detects character encoding for
some sites.
Closes: SF bug #3388291
- logging: Fix SQL output.
Closes: SF bug #3415274, #3422230
- checking: Fix W3C HTML checking by using the new soap12 output.
Closes: SF bug #3413022
- gui: Fix startup when configuration file contains errors.
Closes: SF bug #3392021
- checking: Ignore errors trying to get FTP feature set.
Closes: SF bug #3424719
Changes:
- configuration: Parse logger and logging part names case insensitive.
Closes: SF bug #3380114
- gui: Add actions to find bookmark files to the edit menu.
Features:
- checking: If a warning regex is configured, multiple matches in
the URL content are added as warnings.
Closes: SF bug #3412317
- gui: Allow configuration of a warning regex.