Revert "try"

This reverts commit 3068781a2c02208f8b035bb54005b35ef67eaa28.
Revert "wha"

This reverts commit ee7c88e9f6f90a8edf26831030d658720246c56f.
Revert "update docs for safe mode"

This reverts commit e1867a7cc90674f7f323b95140e1c9b17410bb6d.
Revert "add 'safe submodule; change internal lists to vectors"

This reverts commit 22f703186a39875440b0777c5014768cfdd06134.