v2.4.1

Version 2.4.1

* Fix: compiling tests with link-time-optimization no longer causes
  the tests to not get detected and run.
* Fix: theories now correctly iterate through the argument matrix. This
  manifested as theories running the expected number of times, but
  always using the first possible combination of parameters.
* Fix: fixed leak due to not calling git_libgit2_shutdown. This should
  appease valgrind and the address sanitizer.
* Misc: added suggestion to run ldconfig in installation documentation
  (Gerald Senarclens de Grancy).