Merge branch 'hai/auth_frac' into 'master'

opam

theories/hocap/contrib_bag.v

theories/lecture_notes/ccounter.v

theories/lecture_notes/coq_intro_example_2.v

theories/logatom/elimination_stack/hocap_spec.v

theories/logatom/elimination_stack/stack.v

theories/logatom/flat_combiner/misc.v

theories/logatom/snapshot/atomic_snapshot.v

theories/logatom/treiber2.v

theories/logrel/F_mu_ref/rules_binary.v

theories/logrel/F_mu_ref/soundness.v

theories/logrel/F_mu_ref/soundness_binary.v

theories/logrel/F_mu_ref_conc/examples/stack/refinement.v

theories/logrel/F_mu_ref_conc/examples/stack/stack_rules.v

theories/logrel/F_mu_ref_conc/rules_binary.v

theories/logrel/F_mu_ref_conc/soundness_binary.v

theories/logrel/F_mu_ref_conc/soundness_unary.v

theories/logrel_heaplang/lib/symbol_adt.v

theories/spanning_tree/mon.v