Set version 0.5.1, and update RPM packaging.

configure.ac

 AC_PREREQ(2.68)
 AC_COPYRIGHT([Copyright (c) 2018 UPLEX - Nils Goroll Systemoptimierung])
-AC_INIT([libvmod-selector], [trunk], [varnish-support@uplex.de], [vmod-selector])
+AC_INIT([libvmod-selector], [0.5.1], [varnish-support@uplex.de], [vmod-selector])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_SRCDIR(src/vmod_selector.vcc)
 AM_CONFIG_HEADER(config.h)

pkg/rpm/vmod-selector.spec

 # -D MUST pass in _version and _release, and SHOULD pass in dist.
 
-Summary: Varnish VMOD for matching strings associated with backends, regexen and other strings
+Summary: Varnish VMOD for matching strings associated with backends, regexen and other data
 Name: vmod-selector
 Version: %{_version}
 Release: %{_release}%{?dist}
@@ -14,7 +14,7 @@ Source0: %{name}-%{version}.tar.gz
 # allow versioning.
 Requires: varnishabi-7.0
 
-BuildRequires: varnish-devel >= 6.0.0
+BuildRequires: varnish-devel >= 6.0.0, varnish-devel < 6.1.0
 BuildRequires: pkgconfig
 BuildRequires: make
 BuildRequires: gcc
@@ -31,8 +31,8 @@ Provides: vmod-selector, vmod-selector-debuginfo
 
 %description
 Varnish Module for matching fixed strings and prefixes, and
-associating the matched string with backends, regular expressions and
-other strings.
+associating the matched string with backends, regular expressions,
+integers, and other strings.
 
 %prep
 %setup -q -n %{name}-%{version}
@@ -74,5 +74,8 @@ rm -rf %{buildroot}
 /sbin/ldconfig
 
 %changelog
-* Tue Jul 10 2018 Geoff Simmons <geoff@uplex.de> - %{_version}-%{_release}
+* Fri Aug 23 2019 Geoff Simmons <geoff@uplex.de> - %{_version}-%{_release}
+  Add integers associated with set elements.
+
+* Tue Jul 10 2018 Geoff Simmons <geoff@uplex.de> - 0.5.0-1
   Initial package version for compatibility with Varnish 6.0.0.