Start working on symetric overloading of binary operators
Operator overriding by routine(left[, right])  is now operational.

Next step is probably to support overriding per package.
With current implementation, the first routine found is assumed to be the good one.
No way to indicate that we have nothing to override, given the arguments.
A possible way could be to return no result, and let the interpreter try the next routine
(in the standard search order), until a routine returns a value.  If no result after having
called all the candidate routines then fallback to the standard behavior :
send message to the let argument, passing the right argument if any.
Merge branch 'master'
Update internal notes (parsing : identation-sensitive syntax)
Operator overriding supports overriding per package...
But more work needed, see diary.txt.
Notes updated for Unicode (APL) and Clojure multi-methods
Search the overriding routines from the package of the activation owning the stack.
But that doesn't fix the problem of visibility.
Search the overriding routines from the package of the oldest Rexx activation found in the call stack.
Unicode notes updated : Unicode support in the standard library.
Add examples of operator overloading.
Merge branch 'origin/operators'
Merge revisions 8678-9423 from SourceForge main/trunk
Coroutine notes updated
Fix makeorx.bat : must pass command line parameters when calling some procedures.
Regression introduced when I replaced some goto by call.
RexxBlockDoer : better to not declare unguarded the methods which read/write the attribute 'executable'.
Internal notes updated for exceptions and requires
Add examples to README.md
Shorter title
Add pointers to miscellaneous notes in README.md
Y combinator