Filter messages by level on appenders.
Merge branch 'master' of git://github.com/naryl/log4cl into naryl-master
Workaround for printing :filter, change APPENDER-EXTRA-PRINT-PROPERTIES to
return prop/value list that is printed directly.
No longer up-to-date, using github for wishlist/todo tracking now
Fix slight format string typo in CALL-WITH-LOGGED-PROBLEMS
Update the NEWS file and bump version to 1.1.2