arc unit and arc lint no longer prompt you before continuing if there are failures.
In Mercurial, with certain character sets, some arc workflows may fail in arc-hg while trying to perform UTF8 operations.
- See PHI1959.
Shell completion can be trivially simplified.
- See PHI1933.
arc unit and arc lint should have more sensible ordering and summarization of results.
arc alias can't alias diff, etc.
- See PHI1869.
arc alias doesn't list aliases, etc.
arc may leave stdout/stderr nonblocking.
arc no longer automatically provides "Depends on".
- See PHI1758.