tuned messages -- prefer quote before Position.here, which might be just \<here>;

clarified ML language flags;

clarified painting of invisible caret, e.g. focus change due to popup;

tuned signature -- weaker type requirement;

paint completion range of active popup;

tuned messages;

clarified Token.range_of in accordance to Symbol_Pos.range; eliminated redundant Position.set_range, which is already included in Position.range;

tuned signature;

clarified interaction with dead variables in the composition of BNFs

added BNF cache (within one definition)

updated docs

optimized 'bnf_of_typ' further w.r.t. dead variables

optimization of 'bnf_of_typ' if all variables are dead

improved accounting for dead variables when naming set functions (refines d71c2737ee21)

added explicit killing

more precise error message

reuse same parser for '(co)datatype(_new)' as for 'bnf_decl'

tuned message;

tuned proofs;

tuned whitespace;

unused;

clarified semantic completion: retain kind.full_name as official item name for history; misc tuning;

try explicit semantic completion before syntax completion;

more explicit Completion.Item.range, independently of caret;

tuned whitespace;

clarified stretch_point_range wrt. UTF-16 surrogates; tuned;

tuned;

some rendering of completion range; tuned;

clarified completion names; tuned signature;

NEWS and documentation, including correction of long-overseen "*"

regenerated

keep only identifiers public which are explicitly requested or demanded by dependencies