Update changelog, bump release to 2.13.0-2

Signed-off-by: Michal Fabik <mfabik@redhat.com>

libreport.spec

@@ -15,7 +15,7 @@
 Summary: Generic library for reporting various problems
 Name: libreport
 Version: 2.13.0
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPLv2+
 URL: https://abrt.readthedocs.org/
 Source: https://github.com/abrt/%{name}/archive/%{version}/%{name}-%{version}.tar.gz
@@ -744,6 +744,15 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %endif
 
 %changelog
+* Fri Apr 24 2020 Michal Fabik <mfabik@redhat.com> 2.13.0-2
+- Support new "time" and "time_for_children" kernel namespaces
+- Remove preprocessor namespacing in favor of function name prefixes
+- client-python: Accomodate for multiple debug directories
+- gui-wizard-gtk: Wrap event log messages
+- lib: Drop D-Bus code 
+- plugins: reporter-rhtsupport: Drop unused debugging code 
+- Update translations
+
 * Tue Apr 21 2020 Björn Esser <besser82@fedoraproject.org> - 2.12.0-4
 - Rebuild (json-c)