slacker error code policy for Z3

repaired 'if' logic

killed a few 'metis' calls

honor the fact that the new Z3 can generate Isar proofs

have Sledgehammer generate Isar proofs from Z3 proofs

tuned ML interface

integrate SMT2 with Sledgehammer

removed tracing output

use 'smt2' in SMT examples as much as currently possible

moved 'SMT2' (SMT-LIB-2-based SMT module) into Isabelle

tuned proofs

dropped redundant theorems

tuned

monotonicity in complete lattices

enhanced simplifier solver for preconditions of rewrite rule, can now deal with conjunctions

tuned signature -- clarified module name;

added ML antiquotation @{here};

ML_Context.check_antiquotation still required;

simplified programming interface to define ML antiquotations -- NB: the transformed context ignores updates of the context parser; added command 'print_ML_antiquotations';

proper base comparison;

tuned;

tuned proofs;

more explicit markup and explanation of the improper status of 'back', following the AFP style-guide;

clarified Markup.operator vs. Markup.delimiter; tuned color;

more explicit markup for Token.Literal; Markup.quasi_keyword for Parse.$$$ -- it is used within Args.syntax as well; Markup.operator for name of Args.syntax, to override outer keywords like "where"; tuned signature;

tuned signature;

modernized setup;

tuned;

some document antiquotations for Isabelle/jEdit elements; modernized theory setup;

merged

more explicit Sign.change_check -- detect structural mistakes where they emerge, not at later theory merges; clarified sublocale_global: proper Local_Theory.exit (see also 8fe7414f00b1);

more efficient local theory operations, by imposing a linear change discipline on the main types/consts tables, in order to speed-up Proof_Context.transfer_syntax required for Local_Theory.raw_theory_result;

slightly more rubust (and opportunistic) exit for old-fashioned theory_to_proof, which is used by global 'sublocale' with Named_Target.init but without proper exit;

more standard internal data integrity;

tables with changes relative to some common base version -- support for efficient join/merge of big global tables with small local updates;

tuned signature;

tuned comment;

minor performance tuning via fast matching filter;

added missing theorems to unfolding set

moved 'Quickcheck_Narrowing' further down the theory graph

make it possible to load Quickcheck exhaustive & narrowing in parallel

full path

measurable_lfp/gfp: indirection not necessary

merged

tuned proofs;

proper Char comparison, despite weakly-typed Scala (cf. 5ff5208de089);

tuned message;

tuned message;

include long identifiers in the reckoning of words (e.g. "integer.lifting" vs. 'lifting_update');

tuned messages -- in accordance to Isabelle/Scala;

tuned;

enabled test in PIDE interaction;

proper Args.syntax for slightly odd bundle trickery; do not handle arbitrary exceptions; more abstract type Args.src;

some Markup.language_path to prevent completion of symbols (notably "~") -- always "delimited" for simplicity in contrast to 42ac3cfb89f6;

more markup;

clarified Args.check_src: retain name space information for error output; tuned signature;

tuned;

modernized data managed via Name_Space.table;

clarified Args.src: more abstract type, position refers to name only; prefer self-contained Args.check_src;

tuned signature;