and "nothing".
Until now only products of type names were allowed: I extended
them to allow type expressions.
Removed the destructive update of a map binding "a[b] := c".
Record projection has been extended to allow for qualified
names: "a.b.c" and "a.b.c[d]".
Changed the LIGO extension from ".li" to ".ligo".
Fixed the name of the language to be "LIGO" (instead of "Ligo").
and functional update (copy).
The only creative piece of concrete syntax is that of the
expression for functional updates:
copy foo with record field = value end
where "copy", "with", "record" and "end" are keywords.
