Increse timeouts.
fix typo
better "expected more terms" messages in some cases

Still need docs, make constant stxclass descriptions available
updated tests
Fix docs for pin-arrow-line.
Filled out pin-arrow-label-line interface to match pin-arrow-line.
Make : error on unbound identifiers

Closes PR 13298
Fix error message for misuse of #:methods

Closes PR 14069
slideshow: fix letterbox clipping by avoiding offscreen mode
pict: restore use of loaded mask, if any, by `bitmap`

In case a `bitmap%` object with a mask is passed to `bitmap`.
repair for 5eee14032f

This repair needs a test case, but I think the test will require a lot
of scaffolding to set up a package configuration, so I'm leaving that
part on my todo list for now.
Put static contracts in main repo.
Make version of TR that builds new contracts.
Stashed making TR use new system if it works.
More work on new contracts.
Make it only use the new method.
Enable static contract optimization.
Add require syntax and fix object's method contracts.
Moved static-contract tests to TR test directory.
Move static contract optimizer tests to tests directory.