@markismus: about version 20140602, here's my output now:
Code:
# hold_release detected in slot 0
# in tap state...
# set up hold timer
# in tap state...
# hold gesture detected in slot 0
# in hold state...
# in hold state...
# in hold state...
# in hold state...
# in hold state...
# in hold state...
# in hold state...
# hold_release detected in slot 0