more build options;

simplified Tutorial sessions;
moved original version of generated .tex sources;

proper arguments for old usedir;

more precise imports;

refined "document_dump_mode": "all", "tex+sty", "tex";

allow spaces in file names;

more files for session Pure;

discontinued slightly odd "browser_info_remote" -- it could point to a completely different version of the Isabelle library;

tuned;

remove old output heaps, to ensure that result is valid wrt. check_stamps;
tuned signature;