interesting if you are using large action files or regularly use
Privoxy-Regression-Test while running Privoxy through Valgrind,
for stock configuration files it doesn't really matter.
+- If zlib support is unavailable and there are content
+ filters active but the prevent-compression action is disabled,
+ the show-url-info page includes a warning that compression
+ might prevent filtering.
- The obsolete kill-popups action has been removed as the
PCRS-based popup filters can do the same and are less
unreliable.