treat update_options as part of Sessions.Info meta_digest, for proper re-build…

more command-line options;

tuned options --- avoid confusion with "isabelle build -b";

tuned signature;

isabelle update -u path_cartouches;

updated documentation;

merged

more options;

tuned message;

isabelle update no longer uses PIDE dump, but regular session build database…

proper Node.init_blobs, not just edits (amending ca872f20cf5b);

more robust;

more operations;

clarified session sources: theory and blobs are read from database, instead of…

tuned signature;

tuned;

tuned signature;

clarified signature: more operations;

clarified signature: more operations;

tuned;

more direct access to session_sources, without somewhat fragile file-system…

tuned;

tuned signature;

tuned signature: avoid confusion with Document.Node.Blob and Command.Blob;

clarified signature: old node is ignored;

clarified signature;

tuned;

final tidying of theorems

merged

merged

continued proof simplification

Further simplifications

More tidying of proofs

merged

tuned;

merged

discontinued fragile operation;

more robust operations: avoid somewhat fragile Document.Node.Name.

tuned;

tuned whitespace;

avoid somewhat fragile Document.Node.Name.master_dir_path;

tuned;

clarified signature: avoid somewhat fragile Document.Node.Name.master_dir_path;

tuned;

clarified modules;

tuned;

clarified master_dir: avoid somewhat fragile Document.Node.Name.master_dir_path;

clarified modules;

tuned signature: avoid too many aliases (see also 72daee8a39ca);

merged

strengthened and renamed lemmas asym_on_iff_irrefl_on_if_trans and…

merged

adapted to Isabelle/c9e091867206

tuned;

Fixed a couple of simple_path occurrences

merged

Tidying up of paths, introducing "loop_free" as a separate predicate in the…

clarified signature: more explicit types;

more robust: prefer internal theory names;

clarified session_sources (again, see also 9d0e6ea7aa68);

tuned output;

clarified signature: more explicit types;

clarified signature: more explicit types;

clarified signature: more general operations;

clarified signature: more explicit types (see also 90c552d28d36);

do write_session_sources early, to have information available in build job;

tuned signature, following Url.append_path;

do not bundle Isabelle/Naproche, while it keeps changing;

tuned signature;

clarified signature: uniform master_dir instead of separate field;

tuned;

more standard master_dir;

tuned signature, following Url.append_path;

more robust, for the sake of very rare duplicate files…

merged

tuned;

store session sources within build database: timing e.g. 150ms for HOL and <…

tunes signature;

tuned signature;

tuned;

tuned signature;

clarified signature;

more systematic Sessions.illegal_theory, based on File_Format.theory_excluded;

clarified modules;

tuned;

unused;

tuned: no need to map master_dir, which does not participate in comparison;

tuned signature;

tuned comments;

tuned signature;

tuned;

clarified signature;

removed an unfortunate sledgehammer command

A couple of patches

Big simplifications of old proofs

merged

repaired a proof

Continued proof simplifications

A further round of proof consolidation

tuned signature: avoid too many aliases;