Bump version 2.6.7, update NEWS

NEWS

+Knot DNS 2.6.7 (2018-05-17)
+===========================
+
+Features:
+---------
+ - Added 'dateserial' (YYYYMMDDnn) serial policy configuration (Thanks to Wolfgang Jung)
+
+Improvements:
+-------------
+ - Trailing data indication from the packet parser (libknot)
+ - Better configuration check for a problematical option combination
+
+Bugfixes:
+---------
+ - Incomplete configuration option item name check
+ - Possible buffer overflow in 'knot_dname_to_str' (libknot)
+ - Module dnsproxy doesn't preserve letter case of QNAME
+ - Module dnsproxy duplicates OPT and TSIG in the non-fallback mode
+
 Knot DNS 2.6.6 (2018-04-11)
 ===========================
 

configure.ac

@@ -4,7 +4,7 @@ AC_PREREQ([2.60])
 
 m4_define([knot_VERSION_MAJOR],2)dnl
 m4_define([knot_VERSION_MINOR],6)dnl
-m4_define([knot_VERSION_PATCH],6)dnl
+m4_define([knot_VERSION_PATCH],7)dnl
 m4_define([knot_VERSION_EXTRA],)dnl
 m4_define([knot_PKG_VERSION],[knot_VERSION_MAJOR.knot_VERSION_MINOR.knot_VERSION_PATCH]knot_VERSION_EXTRA)dnl