new release, bump version, update changelog

NEWS

+Knot DNS 1.6.6 (2015-11-24)
+===========================
+
+Bugfixes:
+---------
+ - Fix daemon startup systemd notification
+ - Out-of-bound read in packet parser for malformed NAPTR records (LibFuzzer)
+
+Features:
+---------
+ - Add rosedb module
+
 Knot DNS 1.6.5 (2015-09-01)
 ===========================
 

configure.ac

 #                                               -*- Autoconf -*-
 
 AC_PREREQ([2.60])
-AC_INIT([knot], [1.6.5], [knot-dns@labs.nic.cz])
+AC_INIT([knot], [1.6.6], [knot-dns@labs.nic.cz])
 AM_INIT_AUTOMAKE([gnits subdir-objects dist-xz -Wall -Werror])
 AM_SILENT_RULES([yes])
 AC_CONFIG_SRCDIR([src/knot/main.c])