PEAR_Exception changes

Hi, I'd like to propose some changes to PEAR_Exception. Thomas, Bertrand, and I worked on the original version some time ago, and after a bit of actual use, I have some proposals for improving the way that it handles wrapped exceptions. In particular, I like to see all the stack traces for the exceptions that were re-thrown -- and I imagine that others would like this feature also. So, my questions: 1) Where is the best place to send the patches (I don't think I have commit access to that file directly, and even if I do, I imagine changes to core functionality need to be audited.) 2) What is the policy for making public/protected API changes to PEAR_Exception? E.g. my proposal would change one of the methods to make it static. Does any stable package make intimate use (i.e. extend, call non-stock Exception methods) of PEAR_Exception? (I use it in Net_GeoIP, but only to throw -- and also that packge is not marked stable, since I didn't think PEAR_Exception was considered "stable"). Also, must PEAR_Exception be compatible with PHP 5.0.x (as opposed to 5.1.x)? (I assume yes, but figured I'd ask.) I will wait for answer to (1) before going into more details. Thanks, Hans