Merge branch 'feature/wp/stats' into 'master'

src/kernel_services/plugin_entry_points/log.ml

src/kernel_services/plugin_entry_points/log.mli

src/plugins/aorai/tests/Aorai_test.ml

src/plugins/report/tests/report/oracle/classify.0.res.oracle

src/plugins/report/tests/report/oracle/classify.1.res.oracle

src/plugins/report/tests/report/oracle/classify.2.res.oracle

src/plugins/report/tests/report/oracle/classify.3.res.oracle

src/plugins/report/tests/report/oracle/classify.4.res.oracle

src/plugins/wp/Cache.ml

src/plugins/wp/Cache.mli

src/plugins/wp/Changelog

src/plugins/wp/ProofEngine.ml

src/plugins/wp/ProofEngine.mli

src/plugins/wp/ProverScript.ml

src/plugins/wp/ProverWhy3.ml

src/plugins/wp/Stats.ml

src/plugins/wp/Stats.mli

src/plugins/wp/VC.ml

src/plugins/wp/VC.mli

src/plugins/wp/VCS.ml