Make class properties protected instead of private so that they can be used by subclasses. Access  with static:: rather than self:: so that subclasses can maintain their own instances.
Removed the logger
[#34003] com_contacts category missing pagination


http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=34003&start=0
Merge pull request #3874 from okonomiyaki3000/jftp-more-extensible

[#33937] Make JFTP more easily extensible
[bug][32650] Isis template warning with non exiting message type (Fix #4013)
Merge pull request #4015 from vdespa/issbrowserwarning

Remove the notice from JBrowser
Merge pull request #4023 from illovo/patch-7

[#34003] com_contacts category missing pagination
[bug][33176] categories acl (administrator) not work with section (Fix #3987)