minor performance tuning via fast matching filter;
tuned comment;
tuned signature;
tables with changes relative to some common base version -- support for efficient join/merge of big global tables with small local updates;
more standard internal data integrity;
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 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;
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);
merged
some document antiquotations for Isabelle/jEdit elements;
modernized theory setup;
tuned;
modernized setup;
tuned signature;
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;
clarified Markup.operator vs. Markup.delimiter;
tuned color;
more explicit markup and explanation of the improper status of 'back', following the AFP style-guide;
tuned proofs;
tuned;
proper base comparison;
simplified programming interface to define ML antiquotations -- NB: the transformed context ignores updates of the context parser;
added command 'print_ML_antiquotations';