backed out changeset 6c2494750a4e: it hardly makes a difference for heap size, but crashes arm64_32-darwin for unknown reasons;

enforce rebuild of Isabelle/ML + Isabelle/Scala;

updated to jdk-17.0.7;

minor performance tuning (see also f906f7f83dae and b23c42b9f78a);

performance tuning: cached non-persistent Parser.gram reduces heap size by approx. 1-4%;

more operations;

tuned: more readable ML;

tuned;

backed out changeset 4660181c83c9: remove rather pointless timing (1..50ms);

maintain dynamic position where values are created (again, amending afa6117bace4);

more robust: publish token only after assignment of result;

tuned comments;

clarified signature;

merged

tuned signature;

support for cached evaluation via weak_ref;

optional timing;

more informative trace of context allocations;

tuned;

tuned internal structure;

tuned;

tuned whitespace;

merged

added author

added lemma asymp_on_multpHO

added lemmas multpHO_iff_set_mset_lessHO_set_mset and multpHO_minus_inter_minus_inter_iff

added lemmas count_minus_inter_lt_count_minus_inter_iff and minus_inter_eq_minus_inter_iff

added lemma multpHO_implies_one_step_strong

merged

tuned comments;