track formula roles in proofs and use that to determine whether the conjecture should be negated or not

correct parsing of E dependencies

proper handling of assumptions arising from the goal's being expressed in rule format, for Isar proof construction

tuned

code for while directly, not via while_option

executable true liveness analysis incl an approximating version

now that sets are executable again, no more special treatment of variable sets

handle non-unit clauses gracefully

several improvements to Isar proof reconstruction, by Steffen Smolka (step merging in case splits, time measurements, etc.)

use measurability prover