* make more standard libraries work with `nimPreviewSlimSystem`
* typo
* part two
* Delete specutils.nim
* fixes more tests
* more fixes
* fixes tests
* fixes three more tests
* add formatfloat import
* fix
* last
* fix#13496 handle tombstones
* add test
* more tests
* fix#13504; add SharedTable tests
* fix #https://github.com/nim-lang/Nim/issues/13505 intsets.missingOrExcl silently gave wrong results sometimes
* add test for tintsets
* Locks modules should give a compile error when threads are not enabled.
* fix the compile flags to make the tests pass, or ignore files where necessary.
* Fixed when statement to account for doc builds.