resolved.
* New :command-verbosity SMT option to silence success and error messages
on a per-command basis. API changes to Command infrastructure to support.
-* A new theory of strings. Currently, only word equations are supported.
+* A new theory of strings: word (dis-)equations, length constraints,
+ regular expressions.
* Exit codes are now more standard for UNIX command-line tools. Exit code
zero means no error---but the result could be sat, unsat, or unknown---and
nonzero means error.