Bump version 2.5.4, update NEWS

NEWS

+Knot DNS 2.5.4 (2017-08-31)
+===========================
+
+Improvements:
+-------------
+ - New minimum and maximum refresh interval config options (Thanks to Manabu Sonoda)
+ - New warning when unforced flush with disabled zone file synchronization
+ - New 'dnskey' keymgr command
+ - Linking with libatomic on architectures that require it (Thanks to Pierre-Olivier Mercier)
+ - Removed 'OK' from listing keymgr command outputs
+ - Extended journal and keymgr documentation and logging
+
+Bugfixes:
+---------
+ - Incorrect handling of specific corner-cases with zone-in-journal
+ - The 'share' keymgr command doesn't work
+ - Server crashes if configured with query-size and reply-size statistics options
+ - Malformed big integer configuration values on some 32-bit platforms
+ - Keymgr uses local time when parsing date inputs
+ - Memory leak in kdig upon IXFR query
+
 Knot DNS 2.5.3 (2017-07-14)
 ===========================
 

configure.ac

@@ -4,7 +4,7 @@ AC_PREREQ([2.60])
 
 m4_define([knot_VERSION_MAJOR],2)dnl
 m4_define([knot_VERSION_MINOR],5)dnl
-m4_define([knot_VERSION_PATCH],3)dnl
+m4_define([knot_VERSION_PATCH],4)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