Merge branch '22' into 22-more-scalars
Merge branch '21-dotcode' into 22-more-scalars
Merge branch '21-manual' into 22-more-scalars
more use of constant cons cells in parser
rename Shared functions to MaybeConst
Merge branch '22-more-scalars' into 23
copyright update
Merge branch '22-more-scalars' into 23