Bump version to 2.1.3

While most of the changes are fixes, there is one controversial change
that might possibly warrant to move to a version 2.2, which is that we
now also wrap epoll_ctl.

However, since semver states that the minor version should be
incremented whenever there is a change in the _public_ API, I still
think that this belongs to a bugfix version, because the user-facing
part is still 100% the same as 2.1.2 and handling the epoll_ctl syscall
internally is something I'd consider a bugfix, since it unbreaks using
ip2unix for software using epoll.

Additionally in comparison to the last version bump in 678c01c,
we're now *actually* incrementing the version, which I forgot and I just
updated the changelog.

Signed-off-by: aszlig <aszlig@nix.build>

Author: aszlig

CHANGELOG.md

@@ -4,6 +4,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog], and this project adheres to
 [Semantic Versioning].
 
+## [2.1.3] - 2020-06-01
+
+### Fixed
+- Pass linker version script to the linker instead of the compiler.
+- Compile with `-fPIC` again (regression from version 2.1.2).
+- Out of bounds array access in `globpath`.
+- Handling of `epoll_ctl` calls (they're now replayed after replacing socket).
+- GCC 10 build errors and Clang warnings.
+
 ## [2.1.2] - 2020-05-27
 
 ### Fixed
@@ -84,6 +93,7 @@ The format is based on [Keep a Changelog], and this project adheres to
 - The initial release, which evolved from an early prototype specific to a
   certain use case into a more generic command line tool.
 
+[2.1.3]: https://github.com/nixcloud/ip2unix/compare/v2.1.2...v2.1.3
 [2.1.2]: https://github.com/nixcloud/ip2unix/compare/v2.1.1...v2.1.2
 [2.1.1]: https://github.com/nixcloud/ip2unix/compare/v2.1.0...v2.1.1
 [2.1.0]: https://github.com/nixcloud/ip2unix/compare/v2.0.1...v2.1.0

meson.build

@@ -1,6 +1,6 @@
 project('ip2unix', 'cpp',
         default_options: ['cpp_std=c++17', 'warning_level=3'],
-        meson_version: '>=0.46.0', version: '2.1.1')
+        meson_version: '>=0.46.0', version: '2.1.3')
 
 script_findlibc = files('scripts/findlibc.py')
 script_generrno = files('scripts/generrno.py')