Changes:

- Debug messages provide more detail on proxy objects.

debug(7 | 15);
$object = newInstance(^List, {});

Trace: &newInstance(interface java.util.List, &closure[eval:2]#1) =  
[&closure[eval:2]#1 as java.util.List] at eval:2

- Ordered hashes no longer serialize their miss and remove policies.

This is a bit of a lie actually.  Ordered hashes used to serialize  
their policies except the policies would serialize without a  
reference to the script environment.  Given the way they are buried,  
they never get a new script environment reference, and they cause all  
kinds of exceptions when called after deserialization.

- Fixed an inadvertent shared reference issue with values from  
ordered hash policies.  Try this out in the current version of Sleep:

$default = 42;
%hash = ohash();
setMissPolicy(%hash, lambda({ return $default; }, \$default));

%hash["uh"] += 4;
%hash["eh"] += 7;

println(%hash);

%(uh => 46, eh => 49)

(before it was: %(uh => 53, eh => 53))

- Cast function can now create empty arrays.
- Sleep can now access object fields declared in a parent class.