tuned whitespace;

clarified signature and caching;

clarified GUI: prefer user documents, which are typically without chapter;

tuned;

obsolete;

tuned signature;

merged

NEWS;

clarified renaming of bounds, using Syntax_Trans.variant_bounds: avoid structures and fixed variables with syntax;

tuned signature;

clarified printing of consts: rename apart from all bounds, and thus avoid old Term.declare_free_names with its adhoc policy ("as they are printed");

prefer Term.variant_bounds: bounds vs. frees, no attempt at consts;

more elementary operation Term.variant_bounds: only for bounds vs. frees, no consts, no tfrees;

tuned signature;

clarified modules;

more accurate extern_const: avoid clash with frees;

more direct Proof_Context.lookup_free -- bypass redundancy of Proof_Context.check_const;

clarified signature: uniform context;

clarified signature: uniform context;

proper context for extern operation: observe local options; more uniform global_ctxt for pretty printing;

proper context for extern/check operation: observe local options like names_unique;

tuned;

tuned signature: more operations;

added Halting problem theory

merged

added parallel_group_size option to Mirabelle

adapted bash files to use cartouches

tuned

clarified names context: proper context, without consts;

clarified names context: proper context, without consts;

tuned;

tuned;

clarified signature: more operations;

merged

clarified signature;

tuned names/scopes;

tuned signature: more operations;

eliminate historic clone (see also 550e36c6a2d1);

tuned signature: more operations;

clarified 'unbundle' polarity, according to algebraic group laws;

tuned signature: more operations;

tuned: more direct use of Name.context operations;

tuned;

misc tuning and clarification: more direct use of Name.context operations;

tuned signature: more operations;

tuned: more direct use of Name.context operations;

clarified signature: shorten common cases;

tuned: more standard Name.build_context, although that is a bit longer;

clarified signature: more uniform;

omit redundant combinators (amending 7456a64bc4f6);

tuned signature;

fixed bugs found by Stepan Holub

merged

added lemmas

merged

more ambitious Search_Result.gui_text, using Swing HTML3 (NB: TreeCellRenderer cannot do this, because it is not updated for each entry);

clarified signature and object initialization;

clarified default: avoid copies;

suppress odd icons for documents and folders;

support for modified tree cell renderer;