fix Bitmap%:get-argb-pixels type in images/flomap

- added missing case

closes PR 13717
add some examples to the class/c contract docs

and fix some commas
break some lines in recent commit to make things fit better in the rendered version
fix a quoting error

related to PR 13716
Cleanup provide handling in TR.
Make constructor of struct have correct symbolic-name.

Closes PR 13161.
Make struct type info refer to protected identifiers in typed modules.

Because TR does not provide the unprotected references, the struct info
it exports shouldn't refer to them.

Re-export issues.
Closes PR 13160.

Struct copy issues.
Closes PR 10765.
Closes PR 12513.
Closes PR 13149.