strip down gtest again
fix #145
KEY_EMPTY_NAME not needed in public API
rework in NEWS
further work on NEWS
allow cascading names for "kdb get"
do not check version if version check is disabled
fix syntax of shell if
fix warning (unused variable)
remove markdown dependency
todo for tools
compatibility behaviour: empty keyname for kdbGet
fix bug: return KEY_NS_EMPTY correctly

+testcase
Merge remote-tracking branch 'upstream/master'