Issue 24

at long last, a clear syntax for catching any object thrown by throw or throw+.

```
(try+
    ...
    (catch any e
      ...))
```
other syntax symbols could be added. I considered some shorthands for Exception classes (e.g., ex, rte, ex-info), but I didn't see a compelling advantage to those over the class name.
Did you mean 'any' instead of 'all'?